./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix031.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix031.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix031.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix031.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 23:37:05,020 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 23:37:05,084 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 23:37:05,088 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 23:37:05,089 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 23:37:05,112 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 23:37:05,113 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 23:37:05,113 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 23:37:05,114 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 23:37:05,117 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 23:37:05,117 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 23:37:05,117 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 23:37:05,118 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 23:37:05,119 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 23:37:05,119 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 23:37:05,120 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 23:37:05,120 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 23:37:05,120 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 23:37:05,120 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 23:37:05,120 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 23:37:05,121 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 23:37:05,121 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 23:37:05,121 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 23:37:05,121 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 23:37:05,122 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 23:37:05,122 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 23:37:05,122 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 23:37:05,122 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 23:37:05,123 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 23:37:05,123 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 23:37:05,124 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 23:37:05,124 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 23:37:05,124 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 23:37:05,124 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 23:37:05,125 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 23:37:05,125 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 23:37:05,125 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 23:37:05,125 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 23:37:05,125 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 23:37:05,125 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 23:37:05,126 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 23:37:05,126 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 23:37:05,126 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 23:37:05,126 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-27 23:37:05,330 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 23:37:05,346 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 23:37:05,348 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 23:37:05,349 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 23:37:05,349 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 23:37:05,350 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix031.opt.i [2024-06-27 23:37:06,351 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 23:37:06,557 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 23:37:06,557 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix031.opt.i [2024-06-27 23:37:06,580 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/893ad46a8/a94a0feeb35d437d9dc077012c80c5aa/FLAG1fda06961 [2024-06-27 23:37:06,595 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/893ad46a8/a94a0feeb35d437d9dc077012c80c5aa [2024-06-27 23:37:06,597 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 23:37:06,597 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 23:37:06,598 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix031.opt.yml/witness.yml [2024-06-27 23:37:06,656 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 23:37:06,657 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 23:37:06,659 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 23:37:06,659 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 23:37:06,663 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 23:37:06,664 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 11:37:06" (1/2) ... [2024-06-27 23:37:06,665 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@332d5c56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:37:06, skipping insertion in model container [2024-06-27 23:37:06,665 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 11:37:06" (1/2) ... [2024-06-27 23:37:06,666 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6b0aa72a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:37:06, skipping insertion in model container [2024-06-27 23:37:06,666 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:37:06" (2/2) ... [2024-06-27 23:37:06,668 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@332d5c56 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:37:06, skipping insertion in model container [2024-06-27 23:37:06,668 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:37:06" (2/2) ... [2024-06-27 23:37:06,668 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 23:37:06,692 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 23:37:06,693 INFO L97 edCorrectnessWitness]: Location invariant before [L827-L827] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p0_EBX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p0_EBX) + (long long )y$mem_tmp >= 0LL) && (0LL - (long long )__unbuffered_p0_EBX) + (long long )y$r_buff0_thd2 >= 0LL) && (0LL - (long long )__unbuffered_p0_EBX) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p1_EAX) + (long long )z >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )a >= 0LL) && (0LL - (long long )y) + (long long )y$r_buff0_thd2 >= 0LL) && (0LL - (long long )y) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$r_buff0_thd2 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL + (long long )__unbuffered_p0_EBX) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p1_EBX >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )a >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )x >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )weak$$choice0 >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )weak$$choice2 >= 0LL) && (long long )__unbuffered_p0_EBX - (long long )y$mem_tmp >= 0LL) && (long long )y - (long long )y$mem_tmp >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff1_thd2 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff1_thd2 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0_used - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-27 23:37:06,693 INFO L97 edCorrectnessWitness]: Location invariant before [L826-L826] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p0_EBX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p0_EBX) + (long long )y$mem_tmp >= 0LL) && (0LL - (long long )__unbuffered_p0_EBX) + (long long )y$r_buff0_thd2 >= 0LL) && (0LL - (long long )__unbuffered_p0_EBX) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p1_EAX) + (long long )z >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )a >= 0LL) && (0LL - (long long )y) + (long long )y$r_buff0_thd2 >= 0LL) && (0LL - (long long )y) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$r_buff0_thd2 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL + (long long )__unbuffered_p0_EBX) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )y$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p1_EBX >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )a >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )x >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )weak$$choice0 >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )weak$$choice2 >= 0LL) && (long long )__unbuffered_p0_EBX - (long long )y$mem_tmp >= 0LL) && (long long )y - (long long )y$mem_tmp >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff1_thd2 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff1_thd2 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0_used - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-27 23:37:06,694 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 23:37:06,694 INFO L106 edCorrectnessWitness]: ghost_update [L824-L824] multithreaded = 1; [2024-06-27 23:37:06,734 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 23:37:07,024 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 23:37:07,054 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 23:37:07,194 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 23:37:07,241 INFO L206 MainTranslator]: Completed translation [2024-06-27 23:37:07,241 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:37:07 WrapperNode [2024-06-27 23:37:07,241 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 23:37:07,242 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 23:37:07,242 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 23:37:07,242 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 23:37:07,247 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:37:07" (1/1) ... [2024-06-27 23:37:07,263 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:37:07" (1/1) ... [2024-06-27 23:37:07,293 INFO L138 Inliner]: procedures = 174, calls = 42, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 123 [2024-06-27 23:37:07,293 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 23:37:07,294 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 23:37:07,294 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 23:37:07,294 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 23:37:07,302 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:37:07" (1/1) ... [2024-06-27 23:37:07,303 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:37:07" (1/1) ... [2024-06-27 23:37:07,306 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:37:07" (1/1) ... [2024-06-27 23:37:07,319 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 23:37:07,320 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:37:07" (1/1) ... [2024-06-27 23:37:07,320 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:37:07" (1/1) ... [2024-06-27 23:37:07,326 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:37:07" (1/1) ... [2024-06-27 23:37:07,328 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:37:07" (1/1) ... [2024-06-27 23:37:07,329 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:37:07" (1/1) ... [2024-06-27 23:37:07,343 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:37:07" (1/1) ... [2024-06-27 23:37:07,346 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 23:37:07,347 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 23:37:07,347 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 23:37:07,347 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 23:37:07,348 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:37:07" (1/1) ... [2024-06-27 23:37:07,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 23:37:07,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 23:37:07,379 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 23:37:07,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 23:37:07,410 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 23:37:07,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 23:37:07,410 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 23:37:07,410 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 23:37:07,410 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 23:37:07,410 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 23:37:07,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 23:37:07,411 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 23:37:07,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 23:37:07,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 23:37:07,412 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 23:37:07,520 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 23:37:07,521 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 23:37:07,909 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 23:37:07,909 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 23:37:08,053 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 23:37:08,054 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 23:37:08,055 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 11:37:08 BoogieIcfgContainer [2024-06-27 23:37:08,055 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 23:37:08,057 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 23:37:08,058 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 23:37:08,060 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 23:37:08,060 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 11:37:06" (1/4) ... [2024-06-27 23:37:08,061 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6df10448 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 11:37:08, skipping insertion in model container [2024-06-27 23:37:08,061 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:37:06" (2/4) ... [2024-06-27 23:37:08,061 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6df10448 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 11:37:08, skipping insertion in model container [2024-06-27 23:37:08,061 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:37:07" (3/4) ... [2024-06-27 23:37:08,063 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6df10448 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 11:37:08, skipping insertion in model container [2024-06-27 23:37:08,063 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 11:37:08" (4/4) ... [2024-06-27 23:37:08,064 INFO L112 eAbstractionObserver]: Analyzing ICFG mix031.opt.i [2024-06-27 23:37:08,077 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 23:37:08,077 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-27 23:37:08,077 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 23:37:08,115 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 23:37:08,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 33 transitions, 74 flow [2024-06-27 23:37:08,176 INFO L124 PetriNetUnfolderBase]: 0/31 cut-off events. [2024-06-27 23:37:08,176 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 23:37:08,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 31 events. 0/31 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 46 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-27 23:37:08,178 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 33 transitions, 74 flow [2024-06-27 23:37:08,191 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 32 places, 25 transitions, 56 flow [2024-06-27 23:37:08,199 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 23:37:08,204 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2f72fb98, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 23:37:08,204 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-27 23:37:08,207 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 23:37:08,207 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-27 23:37:08,207 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 23:37:08,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:37:08,217 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 23:37:08,218 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:37:08,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:37:08,224 INFO L85 PathProgramCache]: Analyzing trace with hash 332713848, now seen corresponding path program 1 times [2024-06-27 23:37:08,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:37:08,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454445583] [2024-06-27 23:37:08,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:37:08,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:37:08,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:37:09,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:37:09,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:37:09,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454445583] [2024-06-27 23:37:09,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454445583] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:37:09,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:37:09,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 23:37:09,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197727687] [2024-06-27 23:37:09,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:37:09,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 23:37:09,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:37:09,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 23:37:09,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 23:37:09,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 33 [2024-06-27 23:37:09,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:09,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:37:09,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 33 [2024-06-27 23:37:09,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:37:09,605 INFO L124 PetriNetUnfolderBase]: 162/326 cut-off events. [2024-06-27 23:37:09,605 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-27 23:37:09,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 637 conditions, 326 events. 162/326 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1351 event pairs, 97 based on Foata normal form. 1/311 useless extension candidates. Maximal degree in co-relation 626. Up to 288 conditions per place. [2024-06-27 23:37:09,611 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 21 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2024-06-27 23:37:09,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 31 transitions, 119 flow [2024-06-27 23:37:09,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 23:37:09,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 23:37:09,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 62 transitions. [2024-06-27 23:37:09,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6262626262626263 [2024-06-27 23:37:09,621 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 56 flow. Second operand 3 states and 62 transitions. [2024-06-27 23:37:09,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 31 transitions, 119 flow [2024-06-27 23:37:09,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 31 transitions, 116 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 23:37:09,624 INFO L231 Difference]: Finished difference. Result has 33 places, 27 transitions, 75 flow [2024-06-27 23:37:09,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=75, PETRI_PLACES=33, PETRI_TRANSITIONS=27} [2024-06-27 23:37:09,629 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 1 predicate places. [2024-06-27 23:37:09,629 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 27 transitions, 75 flow [2024-06-27 23:37:09,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:09,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:37:09,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:37:09,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 23:37:09,631 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:37:09,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:37:09,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1910456599, now seen corresponding path program 1 times [2024-06-27 23:37:09,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:37:09,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430183899] [2024-06-27 23:37:09,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:37:09,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:37:09,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:37:10,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:37:10,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:37:10,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430183899] [2024-06-27 23:37:10,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430183899] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:37:10,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:37:10,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 23:37:10,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984084131] [2024-06-27 23:37:10,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:37:10,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 23:37:10,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:37:10,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 23:37:10,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 23:37:10,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 33 [2024-06-27 23:37:10,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 27 transitions, 75 flow. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:10,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:37:10,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 33 [2024-06-27 23:37:10,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:37:10,709 INFO L124 PetriNetUnfolderBase]: 186/356 cut-off events. [2024-06-27 23:37:10,709 INFO L125 PetriNetUnfolderBase]: For 68/68 co-relation queries the response was YES. [2024-06-27 23:37:10,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 798 conditions, 356 events. 186/356 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1455 event pairs, 94 based on Foata normal form. 2/351 useless extension candidates. Maximal degree in co-relation 786. Up to 319 conditions per place. [2024-06-27 23:37:10,712 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 26 selfloop transitions, 5 changer transitions 0/37 dead transitions. [2024-06-27 23:37:10,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 37 transitions, 163 flow [2024-06-27 23:37:10,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 23:37:10,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 23:37:10,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 77 transitions. [2024-06-27 23:37:10,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-06-27 23:37:10,714 INFO L175 Difference]: Start difference. First operand has 33 places, 27 transitions, 75 flow. Second operand 4 states and 77 transitions. [2024-06-27 23:37:10,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 37 transitions, 163 flow [2024-06-27 23:37:10,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 37 transitions, 160 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 23:37:10,724 INFO L231 Difference]: Finished difference. Result has 36 places, 29 transitions, 99 flow [2024-06-27 23:37:10,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=99, PETRI_PLACES=36, PETRI_TRANSITIONS=29} [2024-06-27 23:37:10,725 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 4 predicate places. [2024-06-27 23:37:10,725 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 29 transitions, 99 flow [2024-06-27 23:37:10,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:10,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:37:10,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:37:10,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 23:37:10,726 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:37:10,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:37:10,727 INFO L85 PathProgramCache]: Analyzing trace with hash -905386621, now seen corresponding path program 1 times [2024-06-27 23:37:10,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:37:10,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592242578] [2024-06-27 23:37:10,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:37:10,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:37:10,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:37:11,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:37:11,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:37:11,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592242578] [2024-06-27 23:37:11,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592242578] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:37:11,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:37:11,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 23:37:11,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967573428] [2024-06-27 23:37:11,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:37:11,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 23:37:11,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:37:11,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 23:37:11,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 23:37:11,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 33 [2024-06-27 23:37:11,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 29 transitions, 99 flow. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:11,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:37:11,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 33 [2024-06-27 23:37:11,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:37:11,807 INFO L124 PetriNetUnfolderBase]: 219/412 cut-off events. [2024-06-27 23:37:11,807 INFO L125 PetriNetUnfolderBase]: For 226/226 co-relation queries the response was YES. [2024-06-27 23:37:11,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1018 conditions, 412 events. 219/412 cut-off events. For 226/226 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1622 event pairs, 99 based on Foata normal form. 2/409 useless extension candidates. Maximal degree in co-relation 1004. Up to 366 conditions per place. [2024-06-27 23:37:11,812 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 31 selfloop transitions, 7 changer transitions 0/43 dead transitions. [2024-06-27 23:37:11,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 43 transitions, 213 flow [2024-06-27 23:37:11,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 23:37:11,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 23:37:11,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 90 transitions. [2024-06-27 23:37:11,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2024-06-27 23:37:11,814 INFO L175 Difference]: Start difference. First operand has 36 places, 29 transitions, 99 flow. Second operand 5 states and 90 transitions. [2024-06-27 23:37:11,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 43 transitions, 213 flow [2024-06-27 23:37:11,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 43 transitions, 204 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 23:37:11,816 INFO L231 Difference]: Finished difference. Result has 39 places, 31 transitions, 123 flow [2024-06-27 23:37:11,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=123, PETRI_PLACES=39, PETRI_TRANSITIONS=31} [2024-06-27 23:37:11,817 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 7 predicate places. [2024-06-27 23:37:11,817 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 31 transitions, 123 flow [2024-06-27 23:37:11,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:11,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:37:11,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:37:11,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 23:37:11,818 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:37:11,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:37:11,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1937007300, now seen corresponding path program 1 times [2024-06-27 23:37:11,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:37:11,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760893201] [2024-06-27 23:37:11,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:37:11,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:37:11,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:37:12,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:37:12,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:37:12,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760893201] [2024-06-27 23:37:12,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760893201] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:37:12,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:37:12,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:37:12,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405997360] [2024-06-27 23:37:12,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:37:12,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:37:12,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:37:12,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:37:12,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:37:12,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 33 [2024-06-27 23:37:12,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 31 transitions, 123 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:12,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:37:12,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 33 [2024-06-27 23:37:12,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:37:12,978 INFO L124 PetriNetUnfolderBase]: 216/409 cut-off events. [2024-06-27 23:37:12,979 INFO L125 PetriNetUnfolderBase]: For 383/383 co-relation queries the response was YES. [2024-06-27 23:37:12,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1099 conditions, 409 events. 216/409 cut-off events. For 383/383 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1632 event pairs, 78 based on Foata normal form. 2/406 useless extension candidates. Maximal degree in co-relation 1084. Up to 352 conditions per place. [2024-06-27 23:37:12,981 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 35 selfloop transitions, 9 changer transitions 0/49 dead transitions. [2024-06-27 23:37:12,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 49 transitions, 261 flow [2024-06-27 23:37:12,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:37:12,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:37:12,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 106 transitions. [2024-06-27 23:37:12,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5353535353535354 [2024-06-27 23:37:12,984 INFO L175 Difference]: Start difference. First operand has 39 places, 31 transitions, 123 flow. Second operand 6 states and 106 transitions. [2024-06-27 23:37:12,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 49 transitions, 261 flow [2024-06-27 23:37:12,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 49 transitions, 246 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-27 23:37:12,986 INFO L231 Difference]: Finished difference. Result has 42 places, 33 transitions, 147 flow [2024-06-27 23:37:12,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=147, PETRI_PLACES=42, PETRI_TRANSITIONS=33} [2024-06-27 23:37:12,987 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 10 predicate places. [2024-06-27 23:37:12,987 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 33 transitions, 147 flow [2024-06-27 23:37:12,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:12,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:37:12,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:37:12,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 23:37:12,988 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:37:12,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:37:12,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1801849858, now seen corresponding path program 1 times [2024-06-27 23:37:12,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:37:12,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323260673] [2024-06-27 23:37:12,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:37:12,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:37:13,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:37:14,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:37:14,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:37:14,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323260673] [2024-06-27 23:37:14,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323260673] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:37:14,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:37:14,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:37:14,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984098921] [2024-06-27 23:37:14,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:37:14,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:37:14,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:37:14,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:37:14,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:37:14,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 33 [2024-06-27 23:37:14,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 33 transitions, 147 flow. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:14,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:37:14,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 33 [2024-06-27 23:37:14,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:37:14,656 INFO L124 PetriNetUnfolderBase]: 213/403 cut-off events. [2024-06-27 23:37:14,656 INFO L125 PetriNetUnfolderBase]: For 576/576 co-relation queries the response was YES. [2024-06-27 23:37:14,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1167 conditions, 403 events. 213/403 cut-off events. For 576/576 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1579 event pairs, 57 based on Foata normal form. 2/399 useless extension candidates. Maximal degree in co-relation 1151. Up to 338 conditions per place. [2024-06-27 23:37:14,658 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 39 selfloop transitions, 11 changer transitions 0/55 dead transitions. [2024-06-27 23:37:14,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 55 transitions, 309 flow [2024-06-27 23:37:14,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:37:14,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:37:14,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 122 transitions. [2024-06-27 23:37:14,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5281385281385281 [2024-06-27 23:37:14,660 INFO L175 Difference]: Start difference. First operand has 42 places, 33 transitions, 147 flow. Second operand 7 states and 122 transitions. [2024-06-27 23:37:14,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 55 transitions, 309 flow [2024-06-27 23:37:14,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 55 transitions, 288 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-27 23:37:14,662 INFO L231 Difference]: Finished difference. Result has 45 places, 35 transitions, 171 flow [2024-06-27 23:37:14,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=171, PETRI_PLACES=45, PETRI_TRANSITIONS=35} [2024-06-27 23:37:14,662 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 13 predicate places. [2024-06-27 23:37:14,663 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 35 transitions, 171 flow [2024-06-27 23:37:14,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:14,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:37:14,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:37:14,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 23:37:14,663 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:37:14,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:37:14,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1302825794, now seen corresponding path program 1 times [2024-06-27 23:37:14,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:37:14,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676806451] [2024-06-27 23:37:14,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:37:14,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:37:14,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:37:15,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:37:15,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:37:15,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676806451] [2024-06-27 23:37:15,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676806451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:37:15,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:37:15,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 23:37:15,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882679197] [2024-06-27 23:37:15,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:37:15,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 23:37:15,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:37:15,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 23:37:15,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 23:37:15,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-06-27 23:37:15,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 35 transitions, 171 flow. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:15,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:37:15,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-06-27 23:37:15,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:37:15,620 INFO L124 PetriNetUnfolderBase]: 194/383 cut-off events. [2024-06-27 23:37:15,620 INFO L125 PetriNetUnfolderBase]: For 792/792 co-relation queries the response was YES. [2024-06-27 23:37:15,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1181 conditions, 383 events. 194/383 cut-off events. For 792/792 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1549 event pairs, 56 based on Foata normal form. 1/383 useless extension candidates. Maximal degree in co-relation 1163. Up to 341 conditions per place. [2024-06-27 23:37:15,623 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 29 selfloop transitions, 8 changer transitions 0/43 dead transitions. [2024-06-27 23:37:15,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 43 transitions, 271 flow [2024-06-27 23:37:15,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 23:37:15,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 23:37:15,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 76 transitions. [2024-06-27 23:37:15,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46060606060606063 [2024-06-27 23:37:15,625 INFO L175 Difference]: Start difference. First operand has 45 places, 35 transitions, 171 flow. Second operand 5 states and 76 transitions. [2024-06-27 23:37:15,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 43 transitions, 271 flow [2024-06-27 23:37:15,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 43 transitions, 242 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 23:37:15,629 INFO L231 Difference]: Finished difference. Result has 46 places, 39 transitions, 188 flow [2024-06-27 23:37:15,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=188, PETRI_PLACES=46, PETRI_TRANSITIONS=39} [2024-06-27 23:37:15,632 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 14 predicate places. [2024-06-27 23:37:15,632 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 39 transitions, 188 flow [2024-06-27 23:37:15,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:15,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:37:15,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:37:15,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 23:37:15,633 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:37:15,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:37:15,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1748088052, now seen corresponding path program 1 times [2024-06-27 23:37:15,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:37:15,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223910871] [2024-06-27 23:37:15,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:37:15,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:37:15,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:37:16,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:37:16,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:37:16,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223910871] [2024-06-27 23:37:16,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223910871] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:37:16,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:37:16,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:37:16,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624123269] [2024-06-27 23:37:16,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:37:16,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:37:16,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:37:16,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:37:16,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:37:16,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:37:16,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 39 transitions, 188 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:16,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:37:16,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:37:16,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:37:16,869 INFO L124 PetriNetUnfolderBase]: 220/413 cut-off events. [2024-06-27 23:37:16,869 INFO L125 PetriNetUnfolderBase]: For 1160/1160 co-relation queries the response was YES. [2024-06-27 23:37:16,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1371 conditions, 413 events. 220/413 cut-off events. For 1160/1160 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1611 event pairs, 65 based on Foata normal form. 1/413 useless extension candidates. Maximal degree in co-relation 1350. Up to 385 conditions per place. [2024-06-27 23:37:16,872 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 31 selfloop transitions, 10 changer transitions 0/46 dead transitions. [2024-06-27 23:37:16,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 46 transitions, 290 flow [2024-06-27 23:37:16,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:37:16,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:37:16,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 83 transitions. [2024-06-27 23:37:16,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41919191919191917 [2024-06-27 23:37:16,874 INFO L175 Difference]: Start difference. First operand has 46 places, 39 transitions, 188 flow. Second operand 6 states and 83 transitions. [2024-06-27 23:37:16,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 46 transitions, 290 flow [2024-06-27 23:37:16,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 46 transitions, 279 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 23:37:16,876 INFO L231 Difference]: Finished difference. Result has 50 places, 41 transitions, 214 flow [2024-06-27 23:37:16,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=214, PETRI_PLACES=50, PETRI_TRANSITIONS=41} [2024-06-27 23:37:16,877 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 18 predicate places. [2024-06-27 23:37:16,877 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 41 transitions, 214 flow [2024-06-27 23:37:16,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:16,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:37:16,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:37:16,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 23:37:16,878 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:37:16,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:37:16,878 INFO L85 PathProgramCache]: Analyzing trace with hash -2122468703, now seen corresponding path program 1 times [2024-06-27 23:37:16,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:37:16,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162132729] [2024-06-27 23:37:16,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:37:16,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:37:16,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:37:17,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:37:17,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:37:17,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162132729] [2024-06-27 23:37:17,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162132729] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:37:17,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:37:17,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:37:17,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567581460] [2024-06-27 23:37:17,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:37:17,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:37:17,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:37:17,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:37:17,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:37:17,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-06-27 23:37:17,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 41 transitions, 214 flow. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:17,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:37:17,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-06-27 23:37:17,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:37:18,063 INFO L124 PetriNetUnfolderBase]: 213/412 cut-off events. [2024-06-27 23:37:18,063 INFO L125 PetriNetUnfolderBase]: For 1528/1528 co-relation queries the response was YES. [2024-06-27 23:37:18,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1449 conditions, 412 events. 213/412 cut-off events. For 1528/1528 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1648 event pairs, 62 based on Foata normal form. 1/412 useless extension candidates. Maximal degree in co-relation 1426. Up to 353 conditions per place. [2024-06-27 23:37:18,066 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 33 selfloop transitions, 13 changer transitions 0/53 dead transitions. [2024-06-27 23:37:18,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 53 transitions, 350 flow [2024-06-27 23:37:18,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:37:18,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:37:18,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 91 transitions. [2024-06-27 23:37:18,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4595959595959596 [2024-06-27 23:37:18,067 INFO L175 Difference]: Start difference. First operand has 50 places, 41 transitions, 214 flow. Second operand 6 states and 91 transitions. [2024-06-27 23:37:18,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 53 transitions, 350 flow [2024-06-27 23:37:18,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 53 transitions, 329 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-27 23:37:18,069 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 262 flow [2024-06-27 23:37:18,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=262, PETRI_PLACES=53, PETRI_TRANSITIONS=47} [2024-06-27 23:37:18,070 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 21 predicate places. [2024-06-27 23:37:18,070 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 262 flow [2024-06-27 23:37:18,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:18,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:37:18,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:37:18,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 23:37:18,071 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:37:18,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:37:18,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1643854433, now seen corresponding path program 2 times [2024-06-27 23:37:18,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:37:18,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830549451] [2024-06-27 23:37:18,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:37:18,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:37:18,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:37:18,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:37:18,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:37:18,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830549451] [2024-06-27 23:37:18,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830549451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:37:18,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:37:18,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:37:18,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137428418] [2024-06-27 23:37:18,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:37:18,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:37:18,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:37:18,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:37:18,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:37:19,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-06-27 23:37:19,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 262 flow. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:19,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:37:19,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-06-27 23:37:19,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:37:19,216 INFO L124 PetriNetUnfolderBase]: 216/417 cut-off events. [2024-06-27 23:37:19,216 INFO L125 PetriNetUnfolderBase]: For 1933/1933 co-relation queries the response was YES. [2024-06-27 23:37:19,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1572 conditions, 417 events. 216/417 cut-off events. For 1933/1933 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1670 event pairs, 64 based on Foata normal form. 1/417 useless extension candidates. Maximal degree in co-relation 1547. Up to 348 conditions per place. [2024-06-27 23:37:19,219 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 32 selfloop transitions, 18 changer transitions 0/57 dead transitions. [2024-06-27 23:37:19,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 57 transitions, 416 flow [2024-06-27 23:37:19,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:37:19,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:37:19,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 92 transitions. [2024-06-27 23:37:19,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46464646464646464 [2024-06-27 23:37:19,220 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 262 flow. Second operand 6 states and 92 transitions. [2024-06-27 23:37:19,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 57 transitions, 416 flow [2024-06-27 23:37:19,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 57 transitions, 402 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-06-27 23:37:19,222 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 317 flow [2024-06-27 23:37:19,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=317, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2024-06-27 23:37:19,223 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 26 predicate places. [2024-06-27 23:37:19,223 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 317 flow [2024-06-27 23:37:19,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:19,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:37:19,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:37:19,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 23:37:19,224 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:37:19,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:37:19,224 INFO L85 PathProgramCache]: Analyzing trace with hash 328815071, now seen corresponding path program 3 times [2024-06-27 23:37:19,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:37:19,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150480391] [2024-06-27 23:37:19,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:37:19,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:37:19,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:37:20,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:37:20,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:37:20,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150480391] [2024-06-27 23:37:20,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150480391] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:37:20,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:37:20,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:37:20,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794609502] [2024-06-27 23:37:20,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:37:20,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:37:20,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:37:20,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:37:20,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:37:20,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-06-27 23:37:20,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 317 flow. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:20,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:37:20,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-06-27 23:37:20,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:37:20,309 INFO L124 PetriNetUnfolderBase]: 214/414 cut-off events. [2024-06-27 23:37:20,310 INFO L125 PetriNetUnfolderBase]: For 2406/2406 co-relation queries the response was YES. [2024-06-27 23:37:20,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1648 conditions, 414 events. 214/414 cut-off events. For 2406/2406 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1645 event pairs, 61 based on Foata normal form. 1/414 useless extension candidates. Maximal degree in co-relation 1620. Up to 355 conditions per place. [2024-06-27 23:37:20,312 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 40 selfloop transitions, 13 changer transitions 0/60 dead transitions. [2024-06-27 23:37:20,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 60 transitions, 447 flow [2024-06-27 23:37:20,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:37:20,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:37:20,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 103 transitions. [2024-06-27 23:37:20,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4458874458874459 [2024-06-27 23:37:20,313 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 317 flow. Second operand 7 states and 103 transitions. [2024-06-27 23:37:20,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 60 transitions, 447 flow [2024-06-27 23:37:20,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 60 transitions, 424 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-06-27 23:37:20,317 INFO L231 Difference]: Finished difference. Result has 63 places, 51 transitions, 325 flow [2024-06-27 23:37:20,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=325, PETRI_PLACES=63, PETRI_TRANSITIONS=51} [2024-06-27 23:37:20,318 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 31 predicate places. [2024-06-27 23:37:20,318 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 51 transitions, 325 flow [2024-06-27 23:37:20,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:20,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:37:20,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:37:20,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 23:37:20,319 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:37:20,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:37:20,320 INFO L85 PathProgramCache]: Analyzing trace with hash 705926785, now seen corresponding path program 1 times [2024-06-27 23:37:20,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:37:20,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070014914] [2024-06-27 23:37:20,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:37:20,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:37:20,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:37:21,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:37:21,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:37:21,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070014914] [2024-06-27 23:37:21,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070014914] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:37:21,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:37:21,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:37:21,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965852799] [2024-06-27 23:37:21,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:37:21,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:37:21,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:37:21,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:37:21,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:37:22,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 33 [2024-06-27 23:37:22,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 51 transitions, 325 flow. Second operand has 8 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:22,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:37:22,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 33 [2024-06-27 23:37:22,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:37:22,208 INFO L124 PetriNetUnfolderBase]: 228/424 cut-off events. [2024-06-27 23:37:22,209 INFO L125 PetriNetUnfolderBase]: For 2833/2833 co-relation queries the response was YES. [2024-06-27 23:37:22,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1720 conditions, 424 events. 228/424 cut-off events. For 2833/2833 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1602 event pairs, 39 based on Foata normal form. 4/427 useless extension candidates. Maximal degree in co-relation 1691. Up to 331 conditions per place. [2024-06-27 23:37:22,211 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 48 selfloop transitions, 16 changer transitions 0/70 dead transitions. [2024-06-27 23:37:22,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 70 transitions, 497 flow [2024-06-27 23:37:22,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:37:22,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:37:22,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-27 23:37:22,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5037878787878788 [2024-06-27 23:37:22,213 INFO L175 Difference]: Start difference. First operand has 63 places, 51 transitions, 325 flow. Second operand 8 states and 133 transitions. [2024-06-27 23:37:22,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 70 transitions, 497 flow [2024-06-27 23:37:22,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 70 transitions, 460 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 23:37:22,216 INFO L231 Difference]: Finished difference. Result has 65 places, 50 transitions, 312 flow [2024-06-27 23:37:22,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=312, PETRI_PLACES=65, PETRI_TRANSITIONS=50} [2024-06-27 23:37:22,216 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 33 predicate places. [2024-06-27 23:37:22,216 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 50 transitions, 312 flow [2024-06-27 23:37:22,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:22,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:37:22,217 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:37:22,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 23:37:22,217 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:37:22,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:37:22,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1643844513, now seen corresponding path program 1 times [2024-06-27 23:37:22,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:37:22,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355464793] [2024-06-27 23:37:22,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:37:22,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:37:22,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:37:23,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:37:23,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:37:23,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355464793] [2024-06-27 23:37:23,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355464793] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:37:23,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:37:23,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:37:23,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052701184] [2024-06-27 23:37:23,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:37:23,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:37:23,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:37:23,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:37:23,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:37:23,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:37:23,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 50 transitions, 312 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:23,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:37:23,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:37:23,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:37:23,520 INFO L124 PetriNetUnfolderBase]: 223/418 cut-off events. [2024-06-27 23:37:23,520 INFO L125 PetriNetUnfolderBase]: For 3170/3170 co-relation queries the response was YES. [2024-06-27 23:37:23,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1755 conditions, 418 events. 223/418 cut-off events. For 3170/3170 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1607 event pairs, 60 based on Foata normal form. 1/418 useless extension candidates. Maximal degree in co-relation 1725. Up to 385 conditions per place. [2024-06-27 23:37:23,522 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 41 selfloop transitions, 12 changer transitions 0/58 dead transitions. [2024-06-27 23:37:23,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 58 transitions, 442 flow [2024-06-27 23:37:23,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:37:23,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:37:23,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 93 transitions. [2024-06-27 23:37:23,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4025974025974026 [2024-06-27 23:37:23,524 INFO L175 Difference]: Start difference. First operand has 65 places, 50 transitions, 312 flow. Second operand 7 states and 93 transitions. [2024-06-27 23:37:23,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 58 transitions, 442 flow [2024-06-27 23:37:23,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 58 transitions, 402 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-27 23:37:23,527 INFO L231 Difference]: Finished difference. Result has 66 places, 52 transitions, 315 flow [2024-06-27 23:37:23,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=315, PETRI_PLACES=66, PETRI_TRANSITIONS=52} [2024-06-27 23:37:23,527 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 34 predicate places. [2024-06-27 23:37:23,527 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 52 transitions, 315 flow [2024-06-27 23:37:23,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:23,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:37:23,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:37:23,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 23:37:23,528 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:37:23,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:37:23,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1316081413, now seen corresponding path program 1 times [2024-06-27 23:37:23,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:37:23,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812416123] [2024-06-27 23:37:23,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:37:23,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:37:23,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:37:24,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:37:24,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:37:24,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812416123] [2024-06-27 23:37:24,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812416123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:37:24,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:37:24,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:37:24,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022949848] [2024-06-27 23:37:24,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:37:24,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:37:24,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:37:24,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:37:24,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:37:24,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:37:24,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 52 transitions, 315 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:24,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:37:24,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:37:24,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:37:24,748 INFO L124 PetriNetUnfolderBase]: 233/434 cut-off events. [2024-06-27 23:37:24,749 INFO L125 PetriNetUnfolderBase]: For 3731/3731 co-relation queries the response was YES. [2024-06-27 23:37:24,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1843 conditions, 434 events. 233/434 cut-off events. For 3731/3731 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1674 event pairs, 58 based on Foata normal form. 1/434 useless extension candidates. Maximal degree in co-relation 1811. Up to 371 conditions per place. [2024-06-27 23:37:24,751 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 44 selfloop transitions, 17 changer transitions 0/66 dead transitions. [2024-06-27 23:37:24,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 66 transitions, 491 flow [2024-06-27 23:37:24,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:37:24,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:37:24,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 99 transitions. [2024-06-27 23:37:24,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-27 23:37:24,752 INFO L175 Difference]: Start difference. First operand has 66 places, 52 transitions, 315 flow. Second operand 7 states and 99 transitions. [2024-06-27 23:37:24,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 66 transitions, 491 flow [2024-06-27 23:37:24,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 66 transitions, 464 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-27 23:37:24,756 INFO L231 Difference]: Finished difference. Result has 69 places, 58 transitions, 370 flow [2024-06-27 23:37:24,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=370, PETRI_PLACES=69, PETRI_TRANSITIONS=58} [2024-06-27 23:37:24,756 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 37 predicate places. [2024-06-27 23:37:24,756 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 58 transitions, 370 flow [2024-06-27 23:37:24,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:24,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:37:24,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:37:24,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 23:37:24,757 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:37:24,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:37:24,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1315901923, now seen corresponding path program 2 times [2024-06-27 23:37:24,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:37:24,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885814054] [2024-06-27 23:37:24,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:37:24,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:37:24,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:37:25,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:37:25,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:37:25,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885814054] [2024-06-27 23:37:25,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885814054] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:37:25,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:37:25,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:37:25,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541254067] [2024-06-27 23:37:25,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:37:25,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:37:25,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:37:25,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:37:25,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:37:25,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:37:25,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 58 transitions, 370 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:25,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:37:25,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:37:25,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:37:26,003 INFO L124 PetriNetUnfolderBase]: 236/439 cut-off events. [2024-06-27 23:37:26,003 INFO L125 PetriNetUnfolderBase]: For 4332/4332 co-relation queries the response was YES. [2024-06-27 23:37:26,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1966 conditions, 439 events. 236/439 cut-off events. For 4332/4332 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1689 event pairs, 58 based on Foata normal form. 1/439 useless extension candidates. Maximal degree in co-relation 1932. Up to 370 conditions per place. [2024-06-27 23:37:26,006 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 42 selfloop transitions, 20 changer transitions 0/67 dead transitions. [2024-06-27 23:37:26,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 67 transitions, 528 flow [2024-06-27 23:37:26,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:37:26,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:37:26,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 100 transitions. [2024-06-27 23:37:26,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4329004329004329 [2024-06-27 23:37:26,007 INFO L175 Difference]: Start difference. First operand has 69 places, 58 transitions, 370 flow. Second operand 7 states and 100 transitions. [2024-06-27 23:37:26,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 67 transitions, 528 flow [2024-06-27 23:37:26,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 67 transitions, 503 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-06-27 23:37:26,011 INFO L231 Difference]: Finished difference. Result has 74 places, 60 transitions, 410 flow [2024-06-27 23:37:26,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=410, PETRI_PLACES=74, PETRI_TRANSITIONS=60} [2024-06-27 23:37:26,012 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 42 predicate places. [2024-06-27 23:37:26,012 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 60 transitions, 410 flow [2024-06-27 23:37:26,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:26,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:37:26,012 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:37:26,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 23:37:26,012 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:37:26,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:37:26,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1315901675, now seen corresponding path program 1 times [2024-06-27 23:37:26,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:37:26,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971799703] [2024-06-27 23:37:26,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:37:26,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:37:26,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:37:26,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:37:26,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:37:26,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971799703] [2024-06-27 23:37:26,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971799703] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:37:26,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:37:26,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:37:26,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794673442] [2024-06-27 23:37:26,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:37:26,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:37:26,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:37:26,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:37:26,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:37:27,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:37:27,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 60 transitions, 410 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:27,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:37:27,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:37:27,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:37:27,358 INFO L124 PetriNetUnfolderBase]: 241/445 cut-off events. [2024-06-27 23:37:27,358 INFO L125 PetriNetUnfolderBase]: For 4894/4894 co-relation queries the response was YES. [2024-06-27 23:37:27,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2050 conditions, 445 events. 241/445 cut-off events. For 4894/4894 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1701 event pairs, 58 based on Foata normal form. 1/445 useless extension candidates. Maximal degree in co-relation 2014. Up to 393 conditions per place. [2024-06-27 23:37:27,363 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 45 selfloop transitions, 15 changer transitions 0/69 dead transitions. [2024-06-27 23:37:27,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 69 transitions, 560 flow [2024-06-27 23:37:27,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:37:27,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:37:27,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 96 transitions. [2024-06-27 23:37:27,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4155844155844156 [2024-06-27 23:37:27,364 INFO L175 Difference]: Start difference. First operand has 74 places, 60 transitions, 410 flow. Second operand 7 states and 96 transitions. [2024-06-27 23:37:27,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 69 transitions, 560 flow [2024-06-27 23:37:27,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 69 transitions, 511 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 23:37:27,371 INFO L231 Difference]: Finished difference. Result has 76 places, 62 transitions, 412 flow [2024-06-27 23:37:27,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=412, PETRI_PLACES=76, PETRI_TRANSITIONS=62} [2024-06-27 23:37:27,372 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 44 predicate places. [2024-06-27 23:37:27,373 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 62 transitions, 412 flow [2024-06-27 23:37:27,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:27,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:37:27,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:37:27,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 23:37:27,373 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:37:27,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:37:27,374 INFO L85 PathProgramCache]: Analyzing trace with hash -838410845, now seen corresponding path program 2 times [2024-06-27 23:37:27,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:37:27,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453979662] [2024-06-27 23:37:27,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:37:27,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:37:27,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:37:28,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:37:28,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:37:28,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453979662] [2024-06-27 23:37:28,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453979662] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:37:28,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:37:28,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:37:28,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148951302] [2024-06-27 23:37:28,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:37:28,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:37:28,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:37:28,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:37:28,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:37:28,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:37:28,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 62 transitions, 412 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:28,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:37:28,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:37:28,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:37:28,737 INFO L124 PetriNetUnfolderBase]: 244/451 cut-off events. [2024-06-27 23:37:28,737 INFO L125 PetriNetUnfolderBase]: For 5558/5558 co-relation queries the response was YES. [2024-06-27 23:37:28,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2140 conditions, 451 events. 244/451 cut-off events. For 5558/5558 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1738 event pairs, 60 based on Foata normal form. 1/451 useless extension candidates. Maximal degree in co-relation 2103. Up to 377 conditions per place. [2024-06-27 23:37:28,741 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 39 selfloop transitions, 25 changer transitions 0/73 dead transitions. [2024-06-27 23:37:28,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 73 transitions, 618 flow [2024-06-27 23:37:28,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:37:28,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:37:28,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 98 transitions. [2024-06-27 23:37:28,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-06-27 23:37:28,742 INFO L175 Difference]: Start difference. First operand has 76 places, 62 transitions, 412 flow. Second operand 7 states and 98 transitions. [2024-06-27 23:37:28,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 73 transitions, 618 flow [2024-06-27 23:37:28,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 73 transitions, 583 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 23:37:28,750 INFO L231 Difference]: Finished difference. Result has 78 places, 66 transitions, 468 flow [2024-06-27 23:37:28,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=468, PETRI_PLACES=78, PETRI_TRANSITIONS=66} [2024-06-27 23:37:28,751 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 46 predicate places. [2024-06-27 23:37:28,751 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 66 transitions, 468 flow [2024-06-27 23:37:28,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:28,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:37:28,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:37:28,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 23:37:28,752 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:37:28,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:37:28,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1135844301, now seen corresponding path program 3 times [2024-06-27 23:37:28,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:37:28,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402091734] [2024-06-27 23:37:28,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:37:28,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:37:28,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:37:29,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:37:29,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:37:29,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402091734] [2024-06-27 23:37:29,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402091734] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:37:29,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:37:29,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:37:29,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365175741] [2024-06-27 23:37:29,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:37:29,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:37:29,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:37:29,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:37:29,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:37:29,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:37:29,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 66 transitions, 468 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:29,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:37:29,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:37:29,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:37:30,085 INFO L124 PetriNetUnfolderBase]: 247/456 cut-off events. [2024-06-27 23:37:30,085 INFO L125 PetriNetUnfolderBase]: For 6355/6355 co-relation queries the response was YES. [2024-06-27 23:37:30,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2261 conditions, 456 events. 247/456 cut-off events. For 6355/6355 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1753 event pairs, 60 based on Foata normal form. 1/456 useless extension candidates. Maximal degree in co-relation 2223. Up to 381 conditions per place. [2024-06-27 23:37:30,088 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 41 selfloop transitions, 25 changer transitions 0/75 dead transitions. [2024-06-27 23:37:30,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 75 transitions, 668 flow [2024-06-27 23:37:30,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:37:30,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:37:30,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 107 transitions. [2024-06-27 23:37:30,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4053030303030303 [2024-06-27 23:37:30,089 INFO L175 Difference]: Start difference. First operand has 78 places, 66 transitions, 468 flow. Second operand 8 states and 107 transitions. [2024-06-27 23:37:30,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 75 transitions, 668 flow [2024-06-27 23:37:30,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 75 transitions, 629 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-27 23:37:30,095 INFO L231 Difference]: Finished difference. Result has 83 places, 68 transitions, 504 flow [2024-06-27 23:37:30,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=431, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=504, PETRI_PLACES=83, PETRI_TRANSITIONS=68} [2024-06-27 23:37:30,095 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 51 predicate places. [2024-06-27 23:37:30,095 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 68 transitions, 504 flow [2024-06-27 23:37:30,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:30,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:37:30,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:37:30,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 23:37:30,096 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:37:30,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:37:30,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1135844549, now seen corresponding path program 3 times [2024-06-27 23:37:30,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:37:30,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201653431] [2024-06-27 23:37:30,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:37:30,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:37:30,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:37:31,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:37:31,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:37:31,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201653431] [2024-06-27 23:37:31,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201653431] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:37:31,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:37:31,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:37:31,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652135876] [2024-06-27 23:37:31,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:37:31,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:37:31,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:37:31,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:37:31,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:37:31,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:37:31,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 68 transitions, 504 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:31,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:37:31,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:37:31,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:37:31,295 INFO L124 PetriNetUnfolderBase]: 250/462 cut-off events. [2024-06-27 23:37:31,303 INFO L125 PetriNetUnfolderBase]: For 7310/7310 co-relation queries the response was YES. [2024-06-27 23:37:31,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2385 conditions, 462 events. 250/462 cut-off events. For 7310/7310 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1774 event pairs, 61 based on Foata normal form. 1/462 useless extension candidates. Maximal degree in co-relation 2345. Up to 368 conditions per place. [2024-06-27 23:37:31,306 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 43 selfloop transitions, 27 changer transitions 0/79 dead transitions. [2024-06-27 23:37:31,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 79 transitions, 734 flow [2024-06-27 23:37:31,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:37:31,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:37:31,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 100 transitions. [2024-06-27 23:37:31,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4329004329004329 [2024-06-27 23:37:31,325 INFO L175 Difference]: Start difference. First operand has 83 places, 68 transitions, 504 flow. Second operand 7 states and 100 transitions. [2024-06-27 23:37:31,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 79 transitions, 734 flow [2024-06-27 23:37:31,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 79 transitions, 689 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-27 23:37:31,330 INFO L231 Difference]: Finished difference. Result has 85 places, 72 transitions, 562 flow [2024-06-27 23:37:31,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=459, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=562, PETRI_PLACES=85, PETRI_TRANSITIONS=72} [2024-06-27 23:37:31,333 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 53 predicate places. [2024-06-27 23:37:31,333 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 72 transitions, 562 flow [2024-06-27 23:37:31,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:31,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:37:31,333 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:37:31,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 23:37:31,333 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:37:31,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:37:31,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1124416889, now seen corresponding path program 4 times [2024-06-27 23:37:31,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:37:31,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692355142] [2024-06-27 23:37:31,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:37:31,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:37:31,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:37:32,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:37:32,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:37:32,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692355142] [2024-06-27 23:37:32,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692355142] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:37:32,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:37:32,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:37:32,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627420964] [2024-06-27 23:37:32,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:37:32,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:37:32,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:37:32,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:37:32,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:37:32,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:37:32,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 72 transitions, 562 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:32,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:37:32,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:37:32,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:37:32,313 INFO L124 PetriNetUnfolderBase]: 257/473 cut-off events. [2024-06-27 23:37:32,314 INFO L125 PetriNetUnfolderBase]: For 8199/8199 co-relation queries the response was YES. [2024-06-27 23:37:32,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2522 conditions, 473 events. 257/473 cut-off events. For 8199/8199 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1824 event pairs, 55 based on Foata normal form. 1/473 useless extension candidates. Maximal degree in co-relation 2481. Up to 402 conditions per place. [2024-06-27 23:37:32,317 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 60 selfloop transitions, 19 changer transitions 0/88 dead transitions. [2024-06-27 23:37:32,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 88 transitions, 792 flow [2024-06-27 23:37:32,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:37:32,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:37:32,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 102 transitions. [2024-06-27 23:37:32,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44155844155844154 [2024-06-27 23:37:32,320 INFO L175 Difference]: Start difference. First operand has 85 places, 72 transitions, 562 flow. Second operand 7 states and 102 transitions. [2024-06-27 23:37:32,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 88 transitions, 792 flow [2024-06-27 23:37:32,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 88 transitions, 754 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-27 23:37:32,331 INFO L231 Difference]: Finished difference. Result has 89 places, 76 transitions, 611 flow [2024-06-27 23:37:32,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=611, PETRI_PLACES=89, PETRI_TRANSITIONS=76} [2024-06-27 23:37:32,332 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 57 predicate places. [2024-06-27 23:37:32,332 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 76 transitions, 611 flow [2024-06-27 23:37:32,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:32,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:37:32,332 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:37:32,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 23:37:32,333 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:37:32,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:37:32,333 INFO L85 PathProgramCache]: Analyzing trace with hash 284663799, now seen corresponding path program 5 times [2024-06-27 23:37:32,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:37:32,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560703921] [2024-06-27 23:37:32,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:37:32,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:37:32,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:37:33,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:37:33,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:37:33,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560703921] [2024-06-27 23:37:33,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560703921] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:37:33,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:37:33,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:37:33,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497684538] [2024-06-27 23:37:33,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:37:33,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:37:33,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:37:33,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:37:33,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:37:33,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:37:33,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 76 transitions, 611 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:33,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:37:33,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:37:33,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:37:33,539 INFO L124 PetriNetUnfolderBase]: 260/478 cut-off events. [2024-06-27 23:37:33,539 INFO L125 PetriNetUnfolderBase]: For 9097/9097 co-relation queries the response was YES. [2024-06-27 23:37:33,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2632 conditions, 478 events. 260/478 cut-off events. For 9097/9097 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1844 event pairs, 55 based on Foata normal form. 1/478 useless extension candidates. Maximal degree in co-relation 2590. Up to 407 conditions per place. [2024-06-27 23:37:33,543 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 61 selfloop transitions, 19 changer transitions 0/89 dead transitions. [2024-06-27 23:37:33,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 89 transitions, 829 flow [2024-06-27 23:37:33,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:37:33,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:37:33,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 110 transitions. [2024-06-27 23:37:33,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-27 23:37:33,545 INFO L175 Difference]: Start difference. First operand has 89 places, 76 transitions, 611 flow. Second operand 8 states and 110 transitions. [2024-06-27 23:37:33,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 89 transitions, 829 flow [2024-06-27 23:37:33,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 89 transitions, 774 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-27 23:37:33,553 INFO L231 Difference]: Finished difference. Result has 92 places, 78 transitions, 631 flow [2024-06-27 23:37:33,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=631, PETRI_PLACES=92, PETRI_TRANSITIONS=78} [2024-06-27 23:37:33,554 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 60 predicate places. [2024-06-27 23:37:33,554 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 78 transitions, 631 flow [2024-06-27 23:37:33,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:33,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:37:33,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:37:33,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 23:37:33,554 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:37:33,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:37:33,555 INFO L85 PathProgramCache]: Analyzing trace with hash 284843289, now seen corresponding path program 6 times [2024-06-27 23:37:33,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:37:33,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874969976] [2024-06-27 23:37:33,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:37:33,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:37:33,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:37:34,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:37:34,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:37:34,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874969976] [2024-06-27 23:37:34,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874969976] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:37:34,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:37:34,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:37:34,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88010972] [2024-06-27 23:37:34,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:37:34,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:37:34,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:37:34,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:37:34,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:37:34,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:37:34,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 78 transitions, 631 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:34,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:37:34,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:37:34,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:37:34,775 INFO L124 PetriNetUnfolderBase]: 258/475 cut-off events. [2024-06-27 23:37:34,775 INFO L125 PetriNetUnfolderBase]: For 9813/9813 co-relation queries the response was YES. [2024-06-27 23:37:34,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2626 conditions, 475 events. 258/475 cut-off events. For 9813/9813 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1827 event pairs, 57 based on Foata normal form. 1/475 useless extension candidates. Maximal degree in co-relation 2583. Up to 395 conditions per place. [2024-06-27 23:37:34,779 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 55 selfloop transitions, 24 changer transitions 0/88 dead transitions. [2024-06-27 23:37:34,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 88 transitions, 815 flow [2024-06-27 23:37:34,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:37:34,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:37:34,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 110 transitions. [2024-06-27 23:37:34,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-27 23:37:34,781 INFO L175 Difference]: Start difference. First operand has 92 places, 78 transitions, 631 flow. Second operand 8 states and 110 transitions. [2024-06-27 23:37:34,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 88 transitions, 815 flow [2024-06-27 23:37:34,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 88 transitions, 759 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-27 23:37:34,801 INFO L231 Difference]: Finished difference. Result has 95 places, 78 transitions, 628 flow [2024-06-27 23:37:34,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=575, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=628, PETRI_PLACES=95, PETRI_TRANSITIONS=78} [2024-06-27 23:37:34,802 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 63 predicate places. [2024-06-27 23:37:34,802 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 78 transitions, 628 flow [2024-06-27 23:37:34,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:34,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:37:34,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:37:34,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 23:37:34,803 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:37:34,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:37:34,803 INFO L85 PathProgramCache]: Analyzing trace with hash 300036947, now seen corresponding path program 4 times [2024-06-27 23:37:34,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:37:34,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938356974] [2024-06-27 23:37:34,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:37:34,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:37:34,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:37:35,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:37:35,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:37:35,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938356974] [2024-06-27 23:37:35,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938356974] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:37:35,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:37:35,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:37:35,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016658825] [2024-06-27 23:37:35,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:37:35,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:37:35,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:37:35,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:37:35,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:37:35,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:37:35,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 78 transitions, 628 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:35,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:37:35,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:37:35,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:37:36,094 INFO L124 PetriNetUnfolderBase]: 253/469 cut-off events. [2024-06-27 23:37:36,094 INFO L125 PetriNetUnfolderBase]: For 10167/10167 co-relation queries the response was YES. [2024-06-27 23:37:36,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2580 conditions, 469 events. 253/469 cut-off events. For 10167/10167 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1841 event pairs, 58 based on Foata normal form. 1/469 useless extension candidates. Maximal degree in co-relation 2536. Up to 411 conditions per place. [2024-06-27 23:37:36,097 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 59 selfloop transitions, 15 changer transitions 0/88 dead transitions. [2024-06-27 23:37:36,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 88 transitions, 802 flow [2024-06-27 23:37:36,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:37:36,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:37:36,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 107 transitions. [2024-06-27 23:37:36,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4053030303030303 [2024-06-27 23:37:36,099 INFO L175 Difference]: Start difference. First operand has 95 places, 78 transitions, 628 flow. Second operand 8 states and 107 transitions. [2024-06-27 23:37:36,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 88 transitions, 802 flow [2024-06-27 23:37:36,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 88 transitions, 711 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-27 23:37:36,107 INFO L231 Difference]: Finished difference. Result has 96 places, 78 transitions, 572 flow [2024-06-27 23:37:36,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=537, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=572, PETRI_PLACES=96, PETRI_TRANSITIONS=78} [2024-06-27 23:37:36,108 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 64 predicate places. [2024-06-27 23:37:36,108 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 78 transitions, 572 flow [2024-06-27 23:37:36,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:36,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:37:36,108 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:37:36,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 23:37:36,108 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:37:36,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:37:36,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1135536719, now seen corresponding path program 1 times [2024-06-27 23:37:36,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:37:36,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607113465] [2024-06-27 23:37:36,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:37:36,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:37:36,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:37:37,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:37:37,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:37:37,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607113465] [2024-06-27 23:37:37,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607113465] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:37:37,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:37:37,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:37:37,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182992436] [2024-06-27 23:37:37,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:37:37,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:37:37,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:37:37,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:37:37,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:37:37,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:37:37,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 78 transitions, 572 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:37,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:37:37,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:37:37,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:37:37,702 INFO L124 PetriNetUnfolderBase]: 249/464 cut-off events. [2024-06-27 23:37:37,702 INFO L125 PetriNetUnfolderBase]: For 10764/10764 co-relation queries the response was YES. [2024-06-27 23:37:37,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2536 conditions, 464 events. 249/464 cut-off events. For 10764/10764 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1825 event pairs, 63 based on Foata normal form. 1/464 useless extension candidates. Maximal degree in co-relation 2491. Up to 413 conditions per place. [2024-06-27 23:37:37,705 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 59 selfloop transitions, 14 changer transitions 0/87 dead transitions. [2024-06-27 23:37:37,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 87 transitions, 746 flow [2024-06-27 23:37:37,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:37:37,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:37:37,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 104 transitions. [2024-06-27 23:37:37,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-27 23:37:37,708 INFO L175 Difference]: Start difference. First operand has 96 places, 78 transitions, 572 flow. Second operand 8 states and 104 transitions. [2024-06-27 23:37:37,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 87 transitions, 746 flow [2024-06-27 23:37:37,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 87 transitions, 689 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-27 23:37:37,717 INFO L231 Difference]: Finished difference. Result has 96 places, 80 transitions, 564 flow [2024-06-27 23:37:37,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=515, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=564, PETRI_PLACES=96, PETRI_TRANSITIONS=80} [2024-06-27 23:37:37,717 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 64 predicate places. [2024-06-27 23:37:37,717 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 80 transitions, 564 flow [2024-06-27 23:37:37,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:37,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:37:37,718 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:37:37,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 23:37:37,718 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:37:37,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:37:37,719 INFO L85 PathProgramCache]: Analyzing trace with hash 411342336, now seen corresponding path program 1 times [2024-06-27 23:37:37,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:37:37,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697090223] [2024-06-27 23:37:37,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:37:37,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:37:37,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:37:38,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:37:38,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:37:38,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697090223] [2024-06-27 23:37:38,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697090223] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:37:38,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:37:38,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:37:38,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43112248] [2024-06-27 23:37:38,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:37:38,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:37:38,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:37:38,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:37:38,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:37:38,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:37:38,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 80 transitions, 564 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:38,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:37:38,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:37:38,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:37:38,966 INFO L124 PetriNetUnfolderBase]: 261/482 cut-off events. [2024-06-27 23:37:38,966 INFO L125 PetriNetUnfolderBase]: For 11821/11821 co-relation queries the response was YES. [2024-06-27 23:37:38,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2699 conditions, 482 events. 261/482 cut-off events. For 11821/11821 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1899 event pairs, 58 based on Foata normal form. 1/482 useless extension candidates. Maximal degree in co-relation 2653. Up to 394 conditions per place. [2024-06-27 23:37:38,970 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 65 selfloop transitions, 22 changer transitions 0/96 dead transitions. [2024-06-27 23:37:38,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 96 transitions, 804 flow [2024-06-27 23:37:38,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:37:38,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:37:38,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 113 transitions. [2024-06-27 23:37:38,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42803030303030304 [2024-06-27 23:37:38,971 INFO L175 Difference]: Start difference. First operand has 96 places, 80 transitions, 564 flow. Second operand 8 states and 113 transitions. [2024-06-27 23:37:38,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 96 transitions, 804 flow [2024-06-27 23:37:38,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 96 transitions, 771 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 23:37:38,983 INFO L231 Difference]: Finished difference. Result has 99 places, 86 transitions, 630 flow [2024-06-27 23:37:38,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=531, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=630, PETRI_PLACES=99, PETRI_TRANSITIONS=86} [2024-06-27 23:37:38,984 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 67 predicate places. [2024-06-27 23:37:38,984 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 86 transitions, 630 flow [2024-06-27 23:37:38,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:38,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:37:38,984 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:37:38,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 23:37:38,985 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:37:38,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:37:38,985 INFO L85 PathProgramCache]: Analyzing trace with hash -2138455067, now seen corresponding path program 1 times [2024-06-27 23:37:38,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:37:38,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511525453] [2024-06-27 23:37:38,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:37:38,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:37:38,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:37:40,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:37:40,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:37:40,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511525453] [2024-06-27 23:37:40,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511525453] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:37:40,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:37:40,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:37:40,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266485850] [2024-06-27 23:37:40,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:37:40,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:37:40,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:37:40,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:37:40,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:37:40,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:37:40,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 86 transitions, 630 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:40,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:37:40,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:37:40,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:37:40,334 INFO L124 PetriNetUnfolderBase]: 279/501 cut-off events. [2024-06-27 23:37:40,334 INFO L125 PetriNetUnfolderBase]: For 12693/12693 co-relation queries the response was YES. [2024-06-27 23:37:40,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2890 conditions, 501 events. 279/501 cut-off events. For 12693/12693 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1941 event pairs, 58 based on Foata normal form. 1/501 useless extension candidates. Maximal degree in co-relation 2842. Up to 453 conditions per place. [2024-06-27 23:37:40,338 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 73 selfloop transitions, 21 changer transitions 0/97 dead transitions. [2024-06-27 23:37:40,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 97 transitions, 860 flow [2024-06-27 23:37:40,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:37:40,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:37:40,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-27 23:37:40,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39015151515151514 [2024-06-27 23:37:40,339 INFO L175 Difference]: Start difference. First operand has 99 places, 86 transitions, 630 flow. Second operand 8 states and 103 transitions. [2024-06-27 23:37:40,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 97 transitions, 860 flow [2024-06-27 23:37:40,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 97 transitions, 823 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-27 23:37:40,355 INFO L231 Difference]: Finished difference. Result has 104 places, 88 transitions, 662 flow [2024-06-27 23:37:40,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=593, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=662, PETRI_PLACES=104, PETRI_TRANSITIONS=88} [2024-06-27 23:37:40,356 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 72 predicate places. [2024-06-27 23:37:40,356 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 88 transitions, 662 flow [2024-06-27 23:37:40,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:40,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:37:40,356 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:37:40,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 23:37:40,356 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:37:40,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:37:40,357 INFO L85 PathProgramCache]: Analyzing trace with hash -312897088, now seen corresponding path program 2 times [2024-06-27 23:37:40,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:37:40,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898746673] [2024-06-27 23:37:40,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:37:40,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:37:40,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:37:41,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:37:41,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:37:41,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898746673] [2024-06-27 23:37:41,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898746673] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:37:41,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:37:41,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:37:41,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263425479] [2024-06-27 23:37:41,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:37:41,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:37:41,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:37:41,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:37:41,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:37:41,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:37:41,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 88 transitions, 662 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:41,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:37:41,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:37:41,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:37:41,799 INFO L124 PetriNetUnfolderBase]: 269/494 cut-off events. [2024-06-27 23:37:41,799 INFO L125 PetriNetUnfolderBase]: For 14037/14037 co-relation queries the response was YES. [2024-06-27 23:37:41,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2932 conditions, 494 events. 269/494 cut-off events. For 14037/14037 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1948 event pairs, 57 based on Foata normal form. 1/494 useless extension candidates. Maximal degree in co-relation 2882. Up to 398 conditions per place. [2024-06-27 23:37:41,803 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 64 selfloop transitions, 25 changer transitions 0/99 dead transitions. [2024-06-27 23:37:41,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 99 transitions, 886 flow [2024-06-27 23:37:41,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:37:41,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:37:41,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 122 transitions. [2024-06-27 23:37:41,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107744107744108 [2024-06-27 23:37:41,804 INFO L175 Difference]: Start difference. First operand has 104 places, 88 transitions, 662 flow. Second operand 9 states and 122 transitions. [2024-06-27 23:37:41,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 99 transitions, 886 flow [2024-06-27 23:37:41,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 99 transitions, 833 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-27 23:37:41,816 INFO L231 Difference]: Finished difference. Result has 107 places, 90 transitions, 690 flow [2024-06-27 23:37:41,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=609, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=690, PETRI_PLACES=107, PETRI_TRANSITIONS=90} [2024-06-27 23:37:41,817 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 75 predicate places. [2024-06-27 23:37:41,817 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 90 transitions, 690 flow [2024-06-27 23:37:41,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:41,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:37:41,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:37:41,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 23:37:41,817 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:37:41,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:37:41,818 INFO L85 PathProgramCache]: Analyzing trace with hash 417063913, now seen corresponding path program 2 times [2024-06-27 23:37:41,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:37:41,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472084251] [2024-06-27 23:37:41,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:37:41,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:37:41,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:37:42,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:37:42,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:37:42,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472084251] [2024-06-27 23:37:42,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472084251] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:37:42,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:37:42,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:37:42,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525035716] [2024-06-27 23:37:42,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:37:42,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:37:42,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:37:42,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:37:42,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:37:42,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:37:42,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 90 transitions, 690 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:42,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:37:42,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:37:42,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:37:43,177 INFO L124 PetriNetUnfolderBase]: 290/519 cut-off events. [2024-06-27 23:37:43,177 INFO L125 PetriNetUnfolderBase]: For 15390/15390 co-relation queries the response was YES. [2024-06-27 23:37:43,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3161 conditions, 519 events. 290/519 cut-off events. For 15390/15390 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2020 event pairs, 58 based on Foata normal form. 1/519 useless extension candidates. Maximal degree in co-relation 3110. Up to 455 conditions per place. [2024-06-27 23:37:43,180 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 71 selfloop transitions, 29 changer transitions 0/103 dead transitions. [2024-06-27 23:37:43,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 103 transitions, 1008 flow [2024-06-27 23:37:43,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:37:43,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:37:43,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 106 transitions. [2024-06-27 23:37:43,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4015151515151515 [2024-06-27 23:37:43,182 INFO L175 Difference]: Start difference. First operand has 107 places, 90 transitions, 690 flow. Second operand 8 states and 106 transitions. [2024-06-27 23:37:43,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 103 transitions, 1008 flow [2024-06-27 23:37:43,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 103 transitions, 947 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-27 23:37:43,193 INFO L231 Difference]: Finished difference. Result has 109 places, 94 transitions, 740 flow [2024-06-27 23:37:43,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=629, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=740, PETRI_PLACES=109, PETRI_TRANSITIONS=94} [2024-06-27 23:37:43,194 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 77 predicate places. [2024-06-27 23:37:43,194 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 94 transitions, 740 flow [2024-06-27 23:37:43,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:43,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:37:43,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:37:43,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 23:37:43,195 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:37:43,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:37:43,195 INFO L85 PathProgramCache]: Analyzing trace with hash 417064192, now seen corresponding path program 1 times [2024-06-27 23:37:43,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:37:43,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960700513] [2024-06-27 23:37:43,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:37:43,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:37:43,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:37:44,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:37:44,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:37:44,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960700513] [2024-06-27 23:37:44,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960700513] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:37:44,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:37:44,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:37:44,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596732939] [2024-06-27 23:37:44,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:37:44,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:37:44,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:37:44,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:37:44,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:37:44,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:37:44,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 94 transitions, 740 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:44,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:37:44,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:37:44,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:37:44,553 INFO L124 PetriNetUnfolderBase]: 273/504 cut-off events. [2024-06-27 23:37:44,554 INFO L125 PetriNetUnfolderBase]: For 16499/16499 co-relation queries the response was YES. [2024-06-27 23:37:44,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3110 conditions, 504 events. 273/504 cut-off events. For 16499/16499 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2028 event pairs, 55 based on Foata normal form. 1/504 useless extension candidates. Maximal degree in co-relation 3058. Up to 435 conditions per place. [2024-06-27 23:37:44,557 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 70 selfloop transitions, 17 changer transitions 0/104 dead transitions. [2024-06-27 23:37:44,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 104 transitions, 950 flow [2024-06-27 23:37:44,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:37:44,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:37:44,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 107 transitions. [2024-06-27 23:37:44,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4053030303030303 [2024-06-27 23:37:44,559 INFO L175 Difference]: Start difference. First operand has 109 places, 94 transitions, 740 flow. Second operand 8 states and 107 transitions. [2024-06-27 23:37:44,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 104 transitions, 950 flow [2024-06-27 23:37:44,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 104 transitions, 902 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-27 23:37:44,573 INFO L231 Difference]: Finished difference. Result has 113 places, 96 transitions, 751 flow [2024-06-27 23:37:44,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=692, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=751, PETRI_PLACES=113, PETRI_TRANSITIONS=96} [2024-06-27 23:37:44,578 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 81 predicate places. [2024-06-27 23:37:44,578 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 96 transitions, 751 flow [2024-06-27 23:37:44,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:44,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:37:44,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:37:44,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 23:37:44,579 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:37:44,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:37:44,579 INFO L85 PathProgramCache]: Analyzing trace with hash 417056256, now seen corresponding path program 3 times [2024-06-27 23:37:44,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:37:44,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509174548] [2024-06-27 23:37:44,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:37:44,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:37:44,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:37:45,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:37:45,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:37:45,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509174548] [2024-06-27 23:37:45,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509174548] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:37:45,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:37:45,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:37:45,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480356046] [2024-06-27 23:37:45,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:37:45,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:37:45,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:37:45,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:37:45,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:37:45,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:37:45,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 96 transitions, 751 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:45,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:37:45,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:37:45,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:37:45,976 INFO L124 PetriNetUnfolderBase]: 282/516 cut-off events. [2024-06-27 23:37:45,977 INFO L125 PetriNetUnfolderBase]: For 17980/17980 co-relation queries the response was YES. [2024-06-27 23:37:45,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3309 conditions, 516 events. 282/516 cut-off events. For 17980/17980 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2077 event pairs, 56 based on Foata normal form. 1/516 useless extension candidates. Maximal degree in co-relation 3255. Up to 406 conditions per place. [2024-06-27 23:37:45,980 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 65 selfloop transitions, 29 changer transitions 0/106 dead transitions. [2024-06-27 23:37:45,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 106 transitions, 985 flow [2024-06-27 23:37:45,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:37:45,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:37:45,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 115 transitions. [2024-06-27 23:37:45,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4356060606060606 [2024-06-27 23:37:45,981 INFO L175 Difference]: Start difference. First operand has 113 places, 96 transitions, 751 flow. Second operand 8 states and 115 transitions. [2024-06-27 23:37:45,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 106 transitions, 985 flow [2024-06-27 23:37:45,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 106 transitions, 942 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-27 23:37:45,996 INFO L231 Difference]: Finished difference. Result has 115 places, 98 transitions, 801 flow [2024-06-27 23:37:45,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=708, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=801, PETRI_PLACES=115, PETRI_TRANSITIONS=98} [2024-06-27 23:37:45,997 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 83 predicate places. [2024-06-27 23:37:45,997 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 98 transitions, 801 flow [2024-06-27 23:37:45,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:45,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:37:45,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:37:45,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 23:37:45,998 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:37:45,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:37:45,998 INFO L85 PathProgramCache]: Analyzing trace with hash 417056473, now seen corresponding path program 3 times [2024-06-27 23:37:45,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:37:45,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739231974] [2024-06-27 23:37:45,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:37:45,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:37:46,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:37:47,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:37:47,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:37:47,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739231974] [2024-06-27 23:37:47,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739231974] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:37:47,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:37:47,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:37:47,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113284511] [2024-06-27 23:37:47,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:37:47,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:37:47,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:37:47,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:37:47,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:37:47,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:37:47,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 98 transitions, 801 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:47,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:37:47,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:37:47,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:37:47,276 INFO L124 PetriNetUnfolderBase]: 294/526 cut-off events. [2024-06-27 23:37:47,276 INFO L125 PetriNetUnfolderBase]: For 18586/18586 co-relation queries the response was YES. [2024-06-27 23:37:47,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3424 conditions, 526 events. 294/526 cut-off events. For 18586/18586 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2060 event pairs, 57 based on Foata normal form. 1/526 useless extension candidates. Maximal degree in co-relation 3369. Up to 463 conditions per place. [2024-06-27 23:37:47,279 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 75 selfloop transitions, 28 changer transitions 0/106 dead transitions. [2024-06-27 23:37:47,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 106 transitions, 1027 flow [2024-06-27 23:37:47,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:37:47,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:37:47,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 106 transitions. [2024-06-27 23:37:47,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4015151515151515 [2024-06-27 23:37:47,280 INFO L175 Difference]: Start difference. First operand has 115 places, 98 transitions, 801 flow. Second operand 8 states and 106 transitions. [2024-06-27 23:37:47,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 106 transitions, 1027 flow [2024-06-27 23:37:47,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 106 transitions, 942 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-27 23:37:47,297 INFO L231 Difference]: Finished difference. Result has 117 places, 98 transitions, 777 flow [2024-06-27 23:37:47,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=716, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=777, PETRI_PLACES=117, PETRI_TRANSITIONS=98} [2024-06-27 23:37:47,298 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 85 predicate places. [2024-06-27 23:37:47,298 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 98 transitions, 777 flow [2024-06-27 23:37:47,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:47,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:37:47,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:37:47,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 23:37:47,298 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:37:47,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:37:47,299 INFO L85 PathProgramCache]: Analyzing trace with hash -851434240, now seen corresponding path program 2 times [2024-06-27 23:37:47,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:37:47,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617060258] [2024-06-27 23:37:47,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:37:47,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:37:47,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:37:48,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:37:48,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:37:48,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617060258] [2024-06-27 23:37:48,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617060258] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:37:48,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:37:48,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:37:48,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728758147] [2024-06-27 23:37:48,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:37:48,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:37:48,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:37:48,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:37:48,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:37:48,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:37:48,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 98 transitions, 777 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:48,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:37:48,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:37:48,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:37:48,672 INFO L124 PetriNetUnfolderBase]: 283/520 cut-off events. [2024-06-27 23:37:48,673 INFO L125 PetriNetUnfolderBase]: For 20163/20163 co-relation queries the response was YES. [2024-06-27 23:37:48,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3398 conditions, 520 events. 283/520 cut-off events. For 20163/20163 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2104 event pairs, 57 based on Foata normal form. 1/520 useless extension candidates. Maximal degree in co-relation 3342. Up to 413 conditions per place. [2024-06-27 23:37:48,676 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 65 selfloop transitions, 31 changer transitions 0/113 dead transitions. [2024-06-27 23:37:48,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 113 transitions, 1169 flow [2024-06-27 23:37:48,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:37:48,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:37:48,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 113 transitions. [2024-06-27 23:37:48,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42803030303030304 [2024-06-27 23:37:48,678 INFO L175 Difference]: Start difference. First operand has 117 places, 98 transitions, 777 flow. Second operand 8 states and 113 transitions. [2024-06-27 23:37:48,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 113 transitions, 1169 flow [2024-06-27 23:37:48,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 113 transitions, 1099 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-27 23:37:48,696 INFO L231 Difference]: Finished difference. Result has 118 places, 104 transitions, 838 flow [2024-06-27 23:37:48,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=707, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=838, PETRI_PLACES=118, PETRI_TRANSITIONS=104} [2024-06-27 23:37:48,696 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 86 predicate places. [2024-06-27 23:37:48,697 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 104 transitions, 838 flow [2024-06-27 23:37:48,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:48,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:37:48,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:37:48,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 23:37:48,697 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:37:48,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:37:48,698 INFO L85 PathProgramCache]: Analyzing trace with hash -851434519, now seen corresponding path program 4 times [2024-06-27 23:37:48,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:37:48,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974017831] [2024-06-27 23:37:48,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:37:48,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:37:48,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:37:49,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:37:49,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:37:49,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974017831] [2024-06-27 23:37:49,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974017831] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:37:49,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:37:49,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:37:49,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736797933] [2024-06-27 23:37:49,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:37:49,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:37:49,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:37:49,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:37:49,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:37:49,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:37:49,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 104 transitions, 838 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:49,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:37:49,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:37:49,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:37:50,002 INFO L124 PetriNetUnfolderBase]: 315/560 cut-off events. [2024-06-27 23:37:50,003 INFO L125 PetriNetUnfolderBase]: For 22760/22760 co-relation queries the response was YES. [2024-06-27 23:37:50,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3803 conditions, 560 events. 315/560 cut-off events. For 22760/22760 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2220 event pairs, 61 based on Foata normal form. 1/560 useless extension candidates. Maximal degree in co-relation 3746. Up to 443 conditions per place. [2024-06-27 23:37:50,006 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 74 selfloop transitions, 45 changer transitions 0/122 dead transitions. [2024-06-27 23:37:50,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 122 transitions, 1388 flow [2024-06-27 23:37:50,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:37:50,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:37:50,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 110 transitions. [2024-06-27 23:37:50,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-27 23:37:50,008 INFO L175 Difference]: Start difference. First operand has 118 places, 104 transitions, 838 flow. Second operand 8 states and 110 transitions. [2024-06-27 23:37:50,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 122 transitions, 1388 flow [2024-06-27 23:37:50,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 122 transitions, 1356 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-27 23:37:50,027 INFO L231 Difference]: Finished difference. Result has 123 places, 112 transitions, 1009 flow [2024-06-27 23:37:50,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=806, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1009, PETRI_PLACES=123, PETRI_TRANSITIONS=112} [2024-06-27 23:37:50,027 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 91 predicate places. [2024-06-27 23:37:50,027 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 112 transitions, 1009 flow [2024-06-27 23:37:50,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:50,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:37:50,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:37:50,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 23:37:50,028 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:37:50,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:37:50,028 INFO L85 PathProgramCache]: Analyzing trace with hash 813073760, now seen corresponding path program 3 times [2024-06-27 23:37:50,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:37:50,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632224732] [2024-06-27 23:37:50,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:37:50,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:37:50,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:37:51,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:37:51,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:37:51,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632224732] [2024-06-27 23:37:51,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632224732] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:37:51,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:37:51,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:37:51,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031669820] [2024-06-27 23:37:51,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:37:51,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:37:51,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:37:51,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:37:51,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:37:51,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:37:51,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 112 transitions, 1009 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:51,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:37:51,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:37:51,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:37:51,524 INFO L124 PetriNetUnfolderBase]: 299/546 cut-off events. [2024-06-27 23:37:51,525 INFO L125 PetriNetUnfolderBase]: For 24230/24230 co-relation queries the response was YES. [2024-06-27 23:37:51,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3824 conditions, 546 events. 299/546 cut-off events. For 24230/24230 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2224 event pairs, 57 based on Foata normal form. 1/546 useless extension candidates. Maximal degree in co-relation 3765. Up to 430 conditions per place. [2024-06-27 23:37:51,528 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 67 selfloop transitions, 35 changer transitions 0/123 dead transitions. [2024-06-27 23:37:51,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 123 transitions, 1385 flow [2024-06-27 23:37:51,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:37:51,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:37:51,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 112 transitions. [2024-06-27 23:37:51,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-06-27 23:37:51,529 INFO L175 Difference]: Start difference. First operand has 123 places, 112 transitions, 1009 flow. Second operand 8 states and 112 transitions. [2024-06-27 23:37:51,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 123 transitions, 1385 flow [2024-06-27 23:37:51,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 123 transitions, 1330 flow, removed 18 selfloop flow, removed 2 redundant places. [2024-06-27 23:37:51,551 INFO L231 Difference]: Finished difference. Result has 129 places, 114 transitions, 1053 flow [2024-06-27 23:37:51,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=954, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1053, PETRI_PLACES=129, PETRI_TRANSITIONS=114} [2024-06-27 23:37:51,551 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 97 predicate places. [2024-06-27 23:37:51,552 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 114 transitions, 1053 flow [2024-06-27 23:37:51,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:51,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:37:51,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:37:51,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 23:37:51,552 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:37:51,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:37:51,553 INFO L85 PathProgramCache]: Analyzing trace with hash 803869054, now seen corresponding path program 4 times [2024-06-27 23:37:51,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:37:51,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101940102] [2024-06-27 23:37:51,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:37:51,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:37:51,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:37:52,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:37:52,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:37:52,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101940102] [2024-06-27 23:37:52,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101940102] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:37:52,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:37:52,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:37:52,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831294674] [2024-06-27 23:37:52,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:37:52,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:37:52,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:37:52,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:37:52,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:37:52,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:37:52,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 114 transitions, 1053 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:52,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:37:52,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:37:52,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:37:53,164 INFO L124 PetriNetUnfolderBase]: 308/559 cut-off events. [2024-06-27 23:37:53,164 INFO L125 PetriNetUnfolderBase]: For 27250/27258 co-relation queries the response was YES. [2024-06-27 23:37:53,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4038 conditions, 559 events. 308/559 cut-off events. For 27250/27258 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2282 event pairs, 70 based on Foata normal form. 1/557 useless extension candidates. Maximal degree in co-relation 3977. Up to 396 conditions per place. [2024-06-27 23:37:53,167 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 71 selfloop transitions, 42 changer transitions 0/129 dead transitions. [2024-06-27 23:37:53,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 129 transitions, 1437 flow [2024-06-27 23:37:53,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:37:53,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:37:53,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 125 transitions. [2024-06-27 23:37:53,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4208754208754209 [2024-06-27 23:37:53,169 INFO L175 Difference]: Start difference. First operand has 129 places, 114 transitions, 1053 flow. Second operand 9 states and 125 transitions. [2024-06-27 23:37:53,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 129 transitions, 1437 flow [2024-06-27 23:37:53,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 129 transitions, 1362 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-27 23:37:53,187 INFO L231 Difference]: Finished difference. Result has 135 places, 121 transitions, 1183 flow [2024-06-27 23:37:53,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=978, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1183, PETRI_PLACES=135, PETRI_TRANSITIONS=121} [2024-06-27 23:37:53,188 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 103 predicate places. [2024-06-27 23:37:53,188 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 121 transitions, 1183 flow [2024-06-27 23:37:53,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:53,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:37:53,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:37:53,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 23:37:53,189 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:37:53,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:37:53,189 INFO L85 PathProgramCache]: Analyzing trace with hash 803869271, now seen corresponding path program 5 times [2024-06-27 23:37:53,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:37:53,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151152313] [2024-06-27 23:37:53,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:37:53,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:37:53,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:37:54,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:37:54,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:37:54,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151152313] [2024-06-27 23:37:54,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151152313] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:37:54,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:37:54,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:37:54,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921967318] [2024-06-27 23:37:54,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:37:54,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:37:54,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:37:54,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:37:54,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:37:54,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:37:54,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 121 transitions, 1183 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:54,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:37:54,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:37:54,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:37:54,622 INFO L124 PetriNetUnfolderBase]: 324/577 cut-off events. [2024-06-27 23:37:54,622 INFO L125 PetriNetUnfolderBase]: For 28257/28257 co-relation queries the response was YES. [2024-06-27 23:37:54,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4254 conditions, 577 events. 324/577 cut-off events. For 28257/28257 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2325 event pairs, 72 based on Foata normal form. 1/577 useless extension candidates. Maximal degree in co-relation 4190. Up to 459 conditions per place. [2024-06-27 23:37:54,626 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 81 selfloop transitions, 46 changer transitions 0/130 dead transitions. [2024-06-27 23:37:54,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 130 transitions, 1593 flow [2024-06-27 23:37:54,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:37:54,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:37:54,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 108 transitions. [2024-06-27 23:37:54,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-27 23:37:54,627 INFO L175 Difference]: Start difference. First operand has 135 places, 121 transitions, 1183 flow. Second operand 8 states and 108 transitions. [2024-06-27 23:37:54,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 130 transitions, 1593 flow [2024-06-27 23:37:54,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 130 transitions, 1543 flow, removed 21 selfloop flow, removed 3 redundant places. [2024-06-27 23:37:54,652 INFO L231 Difference]: Finished difference. Result has 140 places, 121 transitions, 1230 flow [2024-06-27 23:37:54,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1133, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1230, PETRI_PLACES=140, PETRI_TRANSITIONS=121} [2024-06-27 23:37:54,653 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 108 predicate places. [2024-06-27 23:37:54,653 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 121 transitions, 1230 flow [2024-06-27 23:37:54,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:54,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:37:54,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:37:54,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 23:37:54,654 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:37:54,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:37:54,654 INFO L85 PathProgramCache]: Analyzing trace with hash 804145760, now seen corresponding path program 4 times [2024-06-27 23:37:54,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:37:54,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698483074] [2024-06-27 23:37:54,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:37:54,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:37:54,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:37:55,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:37:55,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:37:55,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698483074] [2024-06-27 23:37:55,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698483074] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:37:55,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:37:55,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:37:55,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88815346] [2024-06-27 23:37:55,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:37:55,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:37:55,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:37:55,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:37:55,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:37:55,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:37:55,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 121 transitions, 1230 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:55,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:37:55,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:37:55,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:37:56,057 INFO L124 PetriNetUnfolderBase]: 303/555 cut-off events. [2024-06-27 23:37:56,057 INFO L125 PetriNetUnfolderBase]: For 29160/29160 co-relation queries the response was YES. [2024-06-27 23:37:56,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4150 conditions, 555 events. 303/555 cut-off events. For 29160/29160 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2285 event pairs, 68 based on Foata normal form. 1/555 useless extension candidates. Maximal degree in co-relation 4083. Up to 439 conditions per place. [2024-06-27 23:37:56,060 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 70 selfloop transitions, 38 changer transitions 0/129 dead transitions. [2024-06-27 23:37:56,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 129 transitions, 1534 flow [2024-06-27 23:37:56,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:37:56,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:37:56,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 110 transitions. [2024-06-27 23:37:56,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-27 23:37:56,062 INFO L175 Difference]: Start difference. First operand has 140 places, 121 transitions, 1230 flow. Second operand 8 states and 110 transitions. [2024-06-27 23:37:56,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 129 transitions, 1534 flow [2024-06-27 23:37:56,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 129 transitions, 1432 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-27 23:37:56,086 INFO L231 Difference]: Finished difference. Result has 142 places, 121 transitions, 1209 flow [2024-06-27 23:37:56,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1128, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1209, PETRI_PLACES=142, PETRI_TRANSITIONS=121} [2024-06-27 23:37:56,087 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 110 predicate places. [2024-06-27 23:37:56,087 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 121 transitions, 1209 flow [2024-06-27 23:37:56,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:56,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:37:56,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:37:56,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 23:37:56,088 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:37:56,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:37:56,088 INFO L85 PathProgramCache]: Analyzing trace with hash -842237749, now seen corresponding path program 6 times [2024-06-27 23:37:56,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:37:56,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145122898] [2024-06-27 23:37:56,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:37:56,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:37:56,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:37:57,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:37:57,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:37:57,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145122898] [2024-06-27 23:37:57,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145122898] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:37:57,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:37:57,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:37:57,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301977894] [2024-06-27 23:37:57,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:37:57,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:37:57,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:37:57,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:37:57,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:37:57,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:37:57,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 121 transitions, 1209 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:57,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:37:57,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:37:57,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:37:57,438 INFO L124 PetriNetUnfolderBase]: 320/571 cut-off events. [2024-06-27 23:37:57,439 INFO L125 PetriNetUnfolderBase]: For 30127/30127 co-relation queries the response was YES. [2024-06-27 23:37:57,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4268 conditions, 571 events. 320/571 cut-off events. For 30127/30127 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2288 event pairs, 72 based on Foata normal form. 1/571 useless extension candidates. Maximal degree in co-relation 4200. Up to 454 conditions per place. [2024-06-27 23:37:57,443 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 74 selfloop transitions, 52 changer transitions 0/129 dead transitions. [2024-06-27 23:37:57,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 129 transitions, 1551 flow [2024-06-27 23:37:57,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:37:57,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:37:57,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 106 transitions. [2024-06-27 23:37:57,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4015151515151515 [2024-06-27 23:37:57,459 INFO L175 Difference]: Start difference. First operand has 142 places, 121 transitions, 1209 flow. Second operand 8 states and 106 transitions. [2024-06-27 23:37:57,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 129 transitions, 1551 flow [2024-06-27 23:37:57,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 129 transitions, 1469 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-27 23:37:57,489 INFO L231 Difference]: Finished difference. Result has 144 places, 121 transitions, 1236 flow [2024-06-27 23:37:57,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1127, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1236, PETRI_PLACES=144, PETRI_TRANSITIONS=121} [2024-06-27 23:37:57,490 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 112 predicate places. [2024-06-27 23:37:57,490 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 121 transitions, 1236 flow [2024-06-27 23:37:57,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:57,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:37:57,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:37:57,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 23:37:57,491 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:37:57,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:37:57,491 INFO L85 PathProgramCache]: Analyzing trace with hash 497035936, now seen corresponding path program 5 times [2024-06-27 23:37:57,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:37:57,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401326616] [2024-06-27 23:37:57,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:37:57,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:37:57,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:37:58,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:37:58,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:37:58,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401326616] [2024-06-27 23:37:58,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401326616] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:37:58,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:37:58,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:37:58,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407631467] [2024-06-27 23:37:58,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:37:58,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:37:58,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:37:58,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:37:58,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:37:58,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:37:58,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 121 transitions, 1236 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:58,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:37:58,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:37:58,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:37:58,561 INFO L124 PetriNetUnfolderBase]: 313/569 cut-off events. [2024-06-27 23:37:58,562 INFO L125 PetriNetUnfolderBase]: For 31996/32004 co-relation queries the response was YES. [2024-06-27 23:37:58,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4311 conditions, 569 events. 313/569 cut-off events. For 31996/32004 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2348 event pairs, 59 based on Foata normal form. 1/567 useless extension candidates. Maximal degree in co-relation 4242. Up to 469 conditions per place. [2024-06-27 23:37:58,566 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 99 selfloop transitions, 26 changer transitions 0/141 dead transitions. [2024-06-27 23:37:58,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 141 transitions, 1590 flow [2024-06-27 23:37:58,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:37:58,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:37:58,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 116 transitions. [2024-06-27 23:37:58,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2024-06-27 23:37:58,581 INFO L175 Difference]: Start difference. First operand has 144 places, 121 transitions, 1236 flow. Second operand 8 states and 116 transitions. [2024-06-27 23:37:58,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 141 transitions, 1590 flow [2024-06-27 23:37:58,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 141 transitions, 1495 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-27 23:37:58,610 INFO L231 Difference]: Finished difference. Result has 145 places, 127 transitions, 1268 flow [2024-06-27 23:37:58,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1141, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1268, PETRI_PLACES=145, PETRI_TRANSITIONS=127} [2024-06-27 23:37:58,610 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 113 predicate places. [2024-06-27 23:37:58,610 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 127 transitions, 1268 flow [2024-06-27 23:37:58,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:58,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:37:58,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:37:58,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 23:37:58,611 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:37:58,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:37:58,611 INFO L85 PathProgramCache]: Analyzing trace with hash -826007898, now seen corresponding path program 6 times [2024-06-27 23:37:58,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:37:58,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194578570] [2024-06-27 23:37:58,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:37:58,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:37:58,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:37:59,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:37:59,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:37:59,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194578570] [2024-06-27 23:37:59,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194578570] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:37:59,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:37:59,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:37:59,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066075499] [2024-06-27 23:37:59,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:37:59,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:37:59,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:37:59,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:37:59,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:37:59,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:37:59,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 127 transitions, 1268 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:59,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:37:59,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:37:59,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:37:59,687 INFO L124 PetriNetUnfolderBase]: 316/574 cut-off events. [2024-06-27 23:37:59,687 INFO L125 PetriNetUnfolderBase]: For 33790/33798 co-relation queries the response was YES. [2024-06-27 23:37:59,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4376 conditions, 574 events. 316/574 cut-off events. For 33790/33798 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2381 event pairs, 60 based on Foata normal form. 1/572 useless extension candidates. Maximal degree in co-relation 4307. Up to 474 conditions per place. [2024-06-27 23:37:59,691 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 99 selfloop transitions, 29 changer transitions 0/144 dead transitions. [2024-06-27 23:37:59,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 144 transitions, 1604 flow [2024-06-27 23:37:59,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:37:59,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:37:59,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 124 transitions. [2024-06-27 23:37:59,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4175084175084175 [2024-06-27 23:37:59,692 INFO L175 Difference]: Start difference. First operand has 145 places, 127 transitions, 1268 flow. Second operand 9 states and 124 transitions. [2024-06-27 23:37:59,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 144 transitions, 1604 flow [2024-06-27 23:37:59,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 144 transitions, 1550 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-06-27 23:37:59,728 INFO L231 Difference]: Finished difference. Result has 151 places, 129 transitions, 1321 flow [2024-06-27 23:37:59,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1214, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1321, PETRI_PLACES=151, PETRI_TRANSITIONS=129} [2024-06-27 23:37:59,728 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 119 predicate places. [2024-06-27 23:37:59,729 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 129 transitions, 1321 flow [2024-06-27 23:37:59,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:37:59,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:37:59,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:37:59,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 23:37:59,729 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:37:59,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:37:59,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1234583294, now seen corresponding path program 7 times [2024-06-27 23:37:59,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:37:59,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651489635] [2024-06-27 23:37:59,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:37:59,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:37:59,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:00,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:00,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:00,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651489635] [2024-06-27 23:38:00,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651489635] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:00,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:00,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:38:00,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980141774] [2024-06-27 23:38:00,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:00,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:38:00,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:00,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:38:00,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:38:00,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:38:00,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 129 transitions, 1321 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:00,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:00,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:38:00,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:00,936 INFO L124 PetriNetUnfolderBase]: 318/578 cut-off events. [2024-06-27 23:38:00,936 INFO L125 PetriNetUnfolderBase]: For 35581/35589 co-relation queries the response was YES. [2024-06-27 23:38:00,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4475 conditions, 578 events. 318/578 cut-off events. For 35581/35589 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2388 event pairs, 60 based on Foata normal form. 1/576 useless extension candidates. Maximal degree in co-relation 4404. Up to 470 conditions per place. [2024-06-27 23:38:00,940 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 97 selfloop transitions, 31 changer transitions 0/144 dead transitions. [2024-06-27 23:38:00,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 144 transitions, 1655 flow [2024-06-27 23:38:00,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:38:00,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:38:00,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 116 transitions. [2024-06-27 23:38:00,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2024-06-27 23:38:00,942 INFO L175 Difference]: Start difference. First operand has 151 places, 129 transitions, 1321 flow. Second operand 8 states and 116 transitions. [2024-06-27 23:38:00,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 144 transitions, 1655 flow [2024-06-27 23:38:00,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 144 transitions, 1559 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-27 23:38:00,979 INFO L231 Difference]: Finished difference. Result has 151 places, 131 transitions, 1340 flow [2024-06-27 23:38:00,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1225, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1340, PETRI_PLACES=151, PETRI_TRANSITIONS=131} [2024-06-27 23:38:00,979 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 119 predicate places. [2024-06-27 23:38:00,979 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 131 transitions, 1340 flow [2024-06-27 23:38:00,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:00,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:00,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:00,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 23:38:00,980 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:38:00,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:00,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1234565407, now seen corresponding path program 7 times [2024-06-27 23:38:00,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:00,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317484575] [2024-06-27 23:38:00,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:00,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:00,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:01,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:01,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:01,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317484575] [2024-06-27 23:38:01,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317484575] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:01,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:01,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:38:01,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067799522] [2024-06-27 23:38:01,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:01,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:38:01,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:01,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:38:01,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:38:01,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:38:01,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 131 transitions, 1340 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:01,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:01,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:38:01,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:02,140 INFO L124 PetriNetUnfolderBase]: 340/606 cut-off events. [2024-06-27 23:38:02,141 INFO L125 PetriNetUnfolderBase]: For 37221/37221 co-relation queries the response was YES. [2024-06-27 23:38:02,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4657 conditions, 606 events. 340/606 cut-off events. For 37221/37221 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2477 event pairs, 66 based on Foata normal form. 1/606 useless extension candidates. Maximal degree in co-relation 4587. Up to 555 conditions per place. [2024-06-27 23:38:02,145 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 122 selfloop transitions, 21 changer transitions 0/146 dead transitions. [2024-06-27 23:38:02,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 146 transitions, 1690 flow [2024-06-27 23:38:02,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:38:02,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:38:02,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 106 transitions. [2024-06-27 23:38:02,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4015151515151515 [2024-06-27 23:38:02,146 INFO L175 Difference]: Start difference. First operand has 151 places, 131 transitions, 1340 flow. Second operand 8 states and 106 transitions. [2024-06-27 23:38:02,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 146 transitions, 1690 flow [2024-06-27 23:38:02,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 146 transitions, 1597 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-27 23:38:02,184 INFO L231 Difference]: Finished difference. Result has 153 places, 133 transitions, 1328 flow [2024-06-27 23:38:02,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1247, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1328, PETRI_PLACES=153, PETRI_TRANSITIONS=133} [2024-06-27 23:38:02,184 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 121 predicate places. [2024-06-27 23:38:02,185 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 133 transitions, 1328 flow [2024-06-27 23:38:02,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:02,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:02,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:02,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 23:38:02,185 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:38:02,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:02,186 INFO L85 PathProgramCache]: Analyzing trace with hash 234493922, now seen corresponding path program 8 times [2024-06-27 23:38:02,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:02,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556294121] [2024-06-27 23:38:02,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:02,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:02,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:03,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:03,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:03,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556294121] [2024-06-27 23:38:03,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556294121] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:03,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:03,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:38:03,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9135273] [2024-06-27 23:38:03,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:03,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:38:03,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:03,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:38:03,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:38:03,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:38:03,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 133 transitions, 1328 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:03,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:03,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:38:03,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:03,432 INFO L124 PetriNetUnfolderBase]: 325/589 cut-off events. [2024-06-27 23:38:03,432 INFO L125 PetriNetUnfolderBase]: For 39045/39053 co-relation queries the response was YES. [2024-06-27 23:38:03,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4594 conditions, 589 events. 325/589 cut-off events. For 39045/39053 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2455 event pairs, 60 based on Foata normal form. 1/587 useless extension candidates. Maximal degree in co-relation 4523. Up to 487 conditions per place. [2024-06-27 23:38:03,437 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 105 selfloop transitions, 26 changer transitions 0/148 dead transitions. [2024-06-27 23:38:03,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 148 transitions, 1674 flow [2024-06-27 23:38:03,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:38:03,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:38:03,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 124 transitions. [2024-06-27 23:38:03,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4175084175084175 [2024-06-27 23:38:03,438 INFO L175 Difference]: Start difference. First operand has 153 places, 133 transitions, 1328 flow. Second operand 9 states and 124 transitions. [2024-06-27 23:38:03,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 148 transitions, 1674 flow [2024-06-27 23:38:03,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 148 transitions, 1615 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-27 23:38:03,478 INFO L231 Difference]: Finished difference. Result has 156 places, 135 transitions, 1378 flow [2024-06-27 23:38:03,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1269, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1378, PETRI_PLACES=156, PETRI_TRANSITIONS=135} [2024-06-27 23:38:03,479 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 124 predicate places. [2024-06-27 23:38:03,481 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 135 transitions, 1378 flow [2024-06-27 23:38:03,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:03,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:03,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:03,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 23:38:03,486 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:38:03,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:03,488 INFO L85 PathProgramCache]: Analyzing trace with hash 711001959, now seen corresponding path program 8 times [2024-06-27 23:38:03,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:03,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082704351] [2024-06-27 23:38:03,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:03,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:03,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:04,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:04,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:04,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082704351] [2024-06-27 23:38:04,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082704351] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:04,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:04,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:38:04,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389447904] [2024-06-27 23:38:04,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:04,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:38:04,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:04,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:38:04,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:38:04,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:38:04,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 135 transitions, 1378 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:04,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:04,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:38:04,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:04,764 INFO L124 PetriNetUnfolderBase]: 346/616 cut-off events. [2024-06-27 23:38:04,764 INFO L125 PetriNetUnfolderBase]: For 40848/40848 co-relation queries the response was YES. [2024-06-27 23:38:04,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4800 conditions, 616 events. 346/616 cut-off events. For 40848/40848 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2526 event pairs, 65 based on Foata normal form. 1/616 useless extension candidates. Maximal degree in co-relation 4727. Up to 565 conditions per place. [2024-06-27 23:38:04,768 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 125 selfloop transitions, 21 changer transitions 0/149 dead transitions. [2024-06-27 23:38:04,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 149 transitions, 1736 flow [2024-06-27 23:38:04,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:38:04,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:38:04,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-27 23:38:04,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38047138047138046 [2024-06-27 23:38:04,769 INFO L175 Difference]: Start difference. First operand has 156 places, 135 transitions, 1378 flow. Second operand 9 states and 113 transitions. [2024-06-27 23:38:04,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 149 transitions, 1736 flow [2024-06-27 23:38:04,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 149 transitions, 1647 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-27 23:38:04,816 INFO L231 Difference]: Finished difference. Result has 159 places, 137 transitions, 1374 flow [2024-06-27 23:38:04,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1289, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1374, PETRI_PLACES=159, PETRI_TRANSITIONS=137} [2024-06-27 23:38:04,817 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 127 predicate places. [2024-06-27 23:38:04,817 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 137 transitions, 1374 flow [2024-06-27 23:38:04,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:04,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:04,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:04,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 23:38:04,817 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:38:04,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:04,818 INFO L85 PathProgramCache]: Analyzing trace with hash 234643652, now seen corresponding path program 9 times [2024-06-27 23:38:04,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:04,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356719392] [2024-06-27 23:38:04,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:04,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:04,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:05,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:05,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:05,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356719392] [2024-06-27 23:38:05,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356719392] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:05,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:05,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:38:05,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172106236] [2024-06-27 23:38:05,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:05,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:38:05,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:05,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:38:05,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:38:05,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:38:05,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 137 transitions, 1374 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:05,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:05,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:38:05,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:05,926 INFO L124 PetriNetUnfolderBase]: 331/599 cut-off events. [2024-06-27 23:38:05,926 INFO L125 PetriNetUnfolderBase]: For 42852/42860 co-relation queries the response was YES. [2024-06-27 23:38:05,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4748 conditions, 599 events. 331/599 cut-off events. For 42852/42860 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2496 event pairs, 60 based on Foata normal form. 1/597 useless extension candidates. Maximal degree in co-relation 4674. Up to 489 conditions per place. [2024-06-27 23:38:05,931 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 104 selfloop transitions, 29 changer transitions 0/151 dead transitions. [2024-06-27 23:38:05,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 151 transitions, 1724 flow [2024-06-27 23:38:05,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:38:05,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:38:05,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 125 transitions. [2024-06-27 23:38:05,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4208754208754209 [2024-06-27 23:38:05,932 INFO L175 Difference]: Start difference. First operand has 159 places, 137 transitions, 1374 flow. Second operand 9 states and 125 transitions. [2024-06-27 23:38:05,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 151 transitions, 1724 flow [2024-06-27 23:38:05,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 151 transitions, 1661 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-27 23:38:05,981 INFO L231 Difference]: Finished difference. Result has 161 places, 139 transitions, 1430 flow [2024-06-27 23:38:05,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1311, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1430, PETRI_PLACES=161, PETRI_TRANSITIONS=139} [2024-06-27 23:38:05,981 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 129 predicate places. [2024-06-27 23:38:05,981 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 139 transitions, 1430 flow [2024-06-27 23:38:05,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:05,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:05,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:05,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 23:38:05,982 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:38:05,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:05,983 INFO L85 PathProgramCache]: Analyzing trace with hash 711203552, now seen corresponding path program 10 times [2024-06-27 23:38:05,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:05,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653136547] [2024-06-27 23:38:05,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:05,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:05,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:06,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:06,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:06,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653136547] [2024-06-27 23:38:06,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653136547] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:06,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:06,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:38:06,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593482285] [2024-06-27 23:38:06,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:06,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:38:06,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:06,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:38:06,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:38:07,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:38:07,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 139 transitions, 1430 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:07,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:07,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:38:07,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:07,284 INFO L124 PetriNetUnfolderBase]: 331/602 cut-off events. [2024-06-27 23:38:07,284 INFO L125 PetriNetUnfolderBase]: For 43103/43103 co-relation queries the response was YES. [2024-06-27 23:38:07,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4758 conditions, 602 events. 331/602 cut-off events. For 43103/43103 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2504 event pairs, 56 based on Foata normal form. 1/602 useless extension candidates. Maximal degree in co-relation 4683. Up to 465 conditions per place. [2024-06-27 23:38:07,290 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 93 selfloop transitions, 40 changer transitions 0/151 dead transitions. [2024-06-27 23:38:07,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 151 transitions, 1757 flow [2024-06-27 23:38:07,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:38:07,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:38:07,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 124 transitions. [2024-06-27 23:38:07,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4175084175084175 [2024-06-27 23:38:07,291 INFO L175 Difference]: Start difference. First operand has 161 places, 139 transitions, 1430 flow. Second operand 9 states and 124 transitions. [2024-06-27 23:38:07,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 151 transitions, 1757 flow [2024-06-27 23:38:07,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 151 transitions, 1660 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-27 23:38:07,353 INFO L231 Difference]: Finished difference. Result has 163 places, 140 transitions, 1453 flow [2024-06-27 23:38:07,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1333, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1453, PETRI_PLACES=163, PETRI_TRANSITIONS=140} [2024-06-27 23:38:07,355 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 131 predicate places. [2024-06-27 23:38:07,355 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 140 transitions, 1453 flow [2024-06-27 23:38:07,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:07,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:07,356 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:07,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 23:38:07,356 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:38:07,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:07,356 INFO L85 PathProgramCache]: Analyzing trace with hash 711203769, now seen corresponding path program 9 times [2024-06-27 23:38:07,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:07,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39797177] [2024-06-27 23:38:07,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:07,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:07,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:08,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:08,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:08,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39797177] [2024-06-27 23:38:08,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39797177] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:08,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:08,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:38:08,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554305282] [2024-06-27 23:38:08,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:08,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:38:08,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:08,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:38:08,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:38:08,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:38:08,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 140 transitions, 1453 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:08,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:08,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:38:08,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:08,571 INFO L124 PetriNetUnfolderBase]: 350/623 cut-off events. [2024-06-27 23:38:08,572 INFO L125 PetriNetUnfolderBase]: For 44549/44549 co-relation queries the response was YES. [2024-06-27 23:38:08,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4918 conditions, 623 events. 350/623 cut-off events. For 44549/44549 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2556 event pairs, 55 based on Foata normal form. 1/623 useless extension candidates. Maximal degree in co-relation 4842. Up to 550 conditions per place. [2024-06-27 23:38:08,576 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 120 selfloop transitions, 31 changer transitions 0/154 dead transitions. [2024-06-27 23:38:08,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 154 transitions, 1913 flow [2024-06-27 23:38:08,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:38:08,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:38:08,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-27 23:38:08,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39057239057239057 [2024-06-27 23:38:08,578 INFO L175 Difference]: Start difference. First operand has 163 places, 140 transitions, 1453 flow. Second operand 9 states and 116 transitions. [2024-06-27 23:38:08,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 154 transitions, 1913 flow [2024-06-27 23:38:08,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 154 transitions, 1790 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-27 23:38:08,640 INFO L231 Difference]: Finished difference. Result has 165 places, 142 transitions, 1435 flow [2024-06-27 23:38:08,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1330, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1435, PETRI_PLACES=165, PETRI_TRANSITIONS=142} [2024-06-27 23:38:08,641 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 133 predicate places. [2024-06-27 23:38:08,641 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 142 transitions, 1435 flow [2024-06-27 23:38:08,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:08,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:08,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:08,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 23:38:08,641 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:38:08,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:08,642 INFO L85 PathProgramCache]: Analyzing trace with hash 711211488, now seen corresponding path program 5 times [2024-06-27 23:38:08,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:08,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553692334] [2024-06-27 23:38:08,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:08,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:08,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:09,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:09,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:09,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553692334] [2024-06-27 23:38:09,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553692334] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:09,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:09,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:38:09,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239690072] [2024-06-27 23:38:09,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:09,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:38:09,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:09,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:38:09,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:38:09,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:38:09,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 142 transitions, 1435 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:09,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:09,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:38:09,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:09,898 INFO L124 PetriNetUnfolderBase]: 326/595 cut-off events. [2024-06-27 23:38:09,898 INFO L125 PetriNetUnfolderBase]: For 45963/45964 co-relation queries the response was YES. [2024-06-27 23:38:09,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4669 conditions, 595 events. 326/595 cut-off events. For 45963/45964 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2499 event pairs, 56 based on Foata normal form. 2/593 useless extension candidates. Maximal degree in co-relation 4592. Up to 510 conditions per place. [2024-06-27 23:38:09,903 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 112 selfloop transitions, 17 changer transitions 0/153 dead transitions. [2024-06-27 23:38:09,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 153 transitions, 1721 flow [2024-06-27 23:38:09,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:38:09,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:38:09,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-27 23:38:09,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39730639730639733 [2024-06-27 23:38:09,904 INFO L175 Difference]: Start difference. First operand has 165 places, 142 transitions, 1435 flow. Second operand 9 states and 118 transitions. [2024-06-27 23:38:09,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 153 transitions, 1721 flow [2024-06-27 23:38:09,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 153 transitions, 1580 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-27 23:38:09,966 INFO L231 Difference]: Finished difference. Result has 166 places, 142 transitions, 1333 flow [2024-06-27 23:38:09,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1294, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1333, PETRI_PLACES=166, PETRI_TRANSITIONS=142} [2024-06-27 23:38:09,967 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 134 predicate places. [2024-06-27 23:38:09,967 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 142 transitions, 1333 flow [2024-06-27 23:38:09,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:09,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:09,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:09,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 23:38:09,967 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:38:09,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:09,968 INFO L85 PathProgramCache]: Analyzing trace with hash 240215499, now seen corresponding path program 10 times [2024-06-27 23:38:09,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:09,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013721874] [2024-06-27 23:38:09,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:09,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:10,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:10,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:10,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:10,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013721874] [2024-06-27 23:38:10,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013721874] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:10,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:10,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:38:10,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709026280] [2024-06-27 23:38:10,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:10,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:38:10,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:10,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:38:10,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:38:11,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:38:11,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 142 transitions, 1333 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:11,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:11,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:38:11,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:11,231 INFO L124 PetriNetUnfolderBase]: 346/617 cut-off events. [2024-06-27 23:38:11,231 INFO L125 PetriNetUnfolderBase]: For 45557/45557 co-relation queries the response was YES. [2024-06-27 23:38:11,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4708 conditions, 617 events. 346/617 cut-off events. For 45557/45557 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2530 event pairs, 55 based on Foata normal form. 1/617 useless extension candidates. Maximal degree in co-relation 4631. Up to 545 conditions per place. [2024-06-27 23:38:11,236 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 117 selfloop transitions, 33 changer transitions 0/153 dead transitions. [2024-06-27 23:38:11,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 153 transitions, 1661 flow [2024-06-27 23:38:11,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:38:11,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:38:11,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-27 23:38:11,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3838383838383838 [2024-06-27 23:38:11,237 INFO L175 Difference]: Start difference. First operand has 166 places, 142 transitions, 1333 flow. Second operand 9 states and 114 transitions. [2024-06-27 23:38:11,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 153 transitions, 1661 flow [2024-06-27 23:38:11,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 153 transitions, 1556 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-06-27 23:38:11,312 INFO L231 Difference]: Finished difference. Result has 165 places, 142 transitions, 1299 flow [2024-06-27 23:38:11,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1228, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1299, PETRI_PLACES=165, PETRI_TRANSITIONS=142} [2024-06-27 23:38:11,313 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 133 predicate places. [2024-06-27 23:38:11,313 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 142 transitions, 1299 flow [2024-06-27 23:38:11,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:11,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:11,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:11,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 23:38:11,314 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:38:11,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:11,314 INFO L85 PathProgramCache]: Analyzing trace with hash -841899136, now seen corresponding path program 1 times [2024-06-27 23:38:11,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:11,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174739323] [2024-06-27 23:38:11,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:11,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:11,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:12,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:12,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:12,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174739323] [2024-06-27 23:38:12,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174739323] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:12,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:12,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:38:12,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510613080] [2024-06-27 23:38:12,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:12,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:38:12,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:12,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:38:12,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:38:12,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:38:12,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 142 transitions, 1299 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:12,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:12,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:38:12,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:13,177 INFO L124 PetriNetUnfolderBase]: 321/587 cut-off events. [2024-06-27 23:38:13,177 INFO L125 PetriNetUnfolderBase]: For 46588/46589 co-relation queries the response was YES. [2024-06-27 23:38:13,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4489 conditions, 587 events. 321/587 cut-off events. For 46588/46589 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2496 event pairs, 66 based on Foata normal form. 2/583 useless extension candidates. Maximal degree in co-relation 4411. Up to 510 conditions per place. [2024-06-27 23:38:13,181 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 112 selfloop transitions, 16 changer transitions 0/152 dead transitions. [2024-06-27 23:38:13,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 152 transitions, 1587 flow [2024-06-27 23:38:13,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:38:13,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:38:13,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-27 23:38:13,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3872053872053872 [2024-06-27 23:38:13,183 INFO L175 Difference]: Start difference. First operand has 165 places, 142 transitions, 1299 flow. Second operand 9 states and 115 transitions. [2024-06-27 23:38:13,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 152 transitions, 1587 flow [2024-06-27 23:38:13,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 152 transitions, 1485 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 23:38:13,259 INFO L231 Difference]: Finished difference. Result has 165 places, 144 transitions, 1252 flow [2024-06-27 23:38:13,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1197, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1252, PETRI_PLACES=165, PETRI_TRANSITIONS=144} [2024-06-27 23:38:13,260 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 133 predicate places. [2024-06-27 23:38:13,260 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 144 transitions, 1252 flow [2024-06-27 23:38:13,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:13,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:13,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:13,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 23:38:13,260 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:38:13,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:13,261 INFO L85 PathProgramCache]: Analyzing trace with hash -133408936, now seen corresponding path program 1 times [2024-06-27 23:38:13,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:13,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556191565] [2024-06-27 23:38:13,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:13,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:13,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:14,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:14,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:14,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556191565] [2024-06-27 23:38:14,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556191565] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:14,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:14,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:38:14,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400255201] [2024-06-27 23:38:14,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:14,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:38:14,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:14,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:38:14,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:38:14,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:38:14,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 144 transitions, 1252 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:14,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:14,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:38:14,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:14,905 INFO L124 PetriNetUnfolderBase]: 335/611 cut-off events. [2024-06-27 23:38:14,905 INFO L125 PetriNetUnfolderBase]: For 48259/48259 co-relation queries the response was YES. [2024-06-27 23:38:14,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4678 conditions, 611 events. 335/611 cut-off events. For 48259/48259 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2614 event pairs, 57 based on Foata normal form. 1/611 useless extension candidates. Maximal degree in co-relation 4599. Up to 479 conditions per place. [2024-06-27 23:38:14,909 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 113 selfloop transitions, 28 changer transitions 0/160 dead transitions. [2024-06-27 23:38:14,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 160 transitions, 1625 flow [2024-06-27 23:38:14,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:38:14,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:38:14,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 127 transitions. [2024-06-27 23:38:14,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4276094276094276 [2024-06-27 23:38:14,910 INFO L175 Difference]: Start difference. First operand has 165 places, 144 transitions, 1252 flow. Second operand 9 states and 127 transitions. [2024-06-27 23:38:14,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 160 transitions, 1625 flow [2024-06-27 23:38:14,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 160 transitions, 1586 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 23:38:14,977 INFO L231 Difference]: Finished difference. Result has 167 places, 148 transitions, 1335 flow [2024-06-27 23:38:14,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1213, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1335, PETRI_PLACES=167, PETRI_TRANSITIONS=148} [2024-06-27 23:38:14,977 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 135 predicate places. [2024-06-27 23:38:14,977 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 148 transitions, 1335 flow [2024-06-27 23:38:14,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:14,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:14,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:14,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 23:38:14,979 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:38:14,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:14,979 INFO L85 PathProgramCache]: Analyzing trace with hash -133288966, now seen corresponding path program 2 times [2024-06-27 23:38:14,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:14,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185730335] [2024-06-27 23:38:14,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:14,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:15,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:16,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:16,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:16,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185730335] [2024-06-27 23:38:16,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185730335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:16,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:16,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:38:16,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223172504] [2024-06-27 23:38:16,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:16,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:38:16,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:16,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:38:16,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:38:16,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:38:16,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 148 transitions, 1335 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:16,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:16,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:38:16,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:16,922 INFO L124 PetriNetUnfolderBase]: 338/618 cut-off events. [2024-06-27 23:38:16,922 INFO L125 PetriNetUnfolderBase]: For 50311/50311 co-relation queries the response was YES. [2024-06-27 23:38:16,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4781 conditions, 618 events. 338/618 cut-off events. For 50311/50311 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2658 event pairs, 57 based on Foata normal form. 1/618 useless extension candidates. Maximal degree in co-relation 4701. Up to 478 conditions per place. [2024-06-27 23:38:16,926 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 111 selfloop transitions, 31 changer transitions 0/161 dead transitions. [2024-06-27 23:38:16,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 161 transitions, 1677 flow [2024-06-27 23:38:16,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:38:16,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:38:16,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 136 transitions. [2024-06-27 23:38:16,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121212121212121 [2024-06-27 23:38:16,928 INFO L175 Difference]: Start difference. First operand has 167 places, 148 transitions, 1335 flow. Second operand 10 states and 136 transitions. [2024-06-27 23:38:16,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 161 transitions, 1677 flow [2024-06-27 23:38:17,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 161 transitions, 1606 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-27 23:38:17,004 INFO L231 Difference]: Finished difference. Result has 171 places, 150 transitions, 1363 flow [2024-06-27 23:38:17,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1264, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1363, PETRI_PLACES=171, PETRI_TRANSITIONS=150} [2024-06-27 23:38:17,004 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 139 predicate places. [2024-06-27 23:38:17,004 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 150 transitions, 1363 flow [2024-06-27 23:38:17,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:17,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:17,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:17,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 23:38:17,005 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:38:17,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:17,005 INFO L85 PathProgramCache]: Analyzing trace with hash -133288780, now seen corresponding path program 1 times [2024-06-27 23:38:17,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:17,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354520779] [2024-06-27 23:38:17,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:17,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:17,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:18,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:18,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:18,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354520779] [2024-06-27 23:38:18,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354520779] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:18,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:18,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:38:18,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062587463] [2024-06-27 23:38:18,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:18,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:38:18,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:18,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:38:18,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:38:18,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:38:18,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 150 transitions, 1363 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:18,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:18,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:38:18,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:18,559 INFO L124 PetriNetUnfolderBase]: 357/640 cut-off events. [2024-06-27 23:38:18,559 INFO L125 PetriNetUnfolderBase]: For 53638/53638 co-relation queries the response was YES. [2024-06-27 23:38:18,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4954 conditions, 640 events. 357/640 cut-off events. For 53638/53638 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2709 event pairs, 69 based on Foata normal form. 1/640 useless extension candidates. Maximal degree in co-relation 4873. Up to 564 conditions per place. [2024-06-27 23:38:18,563 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 132 selfloop transitions, 28 changer transitions 0/163 dead transitions. [2024-06-27 23:38:18,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 163 transitions, 1737 flow [2024-06-27 23:38:18,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:38:18,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:38:18,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-27 23:38:18,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39057239057239057 [2024-06-27 23:38:18,565 INFO L175 Difference]: Start difference. First operand has 171 places, 150 transitions, 1363 flow. Second operand 9 states and 116 transitions. [2024-06-27 23:38:18,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 163 transitions, 1737 flow [2024-06-27 23:38:18,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 163 transitions, 1633 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-27 23:38:18,627 INFO L231 Difference]: Finished difference. Result has 171 places, 152 transitions, 1348 flow [2024-06-27 23:38:18,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1259, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1348, PETRI_PLACES=171, PETRI_TRANSITIONS=152} [2024-06-27 23:38:18,627 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 139 predicate places. [2024-06-27 23:38:18,627 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 152 transitions, 1348 flow [2024-06-27 23:38:18,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:18,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:18,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:18,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 23:38:18,628 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:38:18,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:18,629 INFO L85 PathProgramCache]: Analyzing trace with hash -128640392, now seen corresponding path program 1 times [2024-06-27 23:38:18,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:18,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540848277] [2024-06-27 23:38:18,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:18,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:18,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:19,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:19,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:19,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540848277] [2024-06-27 23:38:19,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540848277] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:19,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:19,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:38:19,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667919427] [2024-06-27 23:38:19,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:19,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:38:19,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:19,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:38:19,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:38:19,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:38:19,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 152 transitions, 1348 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:19,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:19,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:38:19,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:20,186 INFO L124 PetriNetUnfolderBase]: 360/645 cut-off events. [2024-06-27 23:38:20,187 INFO L125 PetriNetUnfolderBase]: For 54321/54321 co-relation queries the response was YES. [2024-06-27 23:38:20,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5025 conditions, 645 events. 360/645 cut-off events. For 54321/54321 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2744 event pairs, 52 based on Foata normal form. 1/645 useless extension candidates. Maximal degree in co-relation 4944. Up to 587 conditions per place. [2024-06-27 23:38:20,191 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 138 selfloop transitions, 23 changer transitions 0/164 dead transitions. [2024-06-27 23:38:20,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 164 transitions, 1718 flow [2024-06-27 23:38:20,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:38:20,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:38:20,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-27 23:38:20,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38047138047138046 [2024-06-27 23:38:20,192 INFO L175 Difference]: Start difference. First operand has 171 places, 152 transitions, 1348 flow. Second operand 9 states and 113 transitions. [2024-06-27 23:38:20,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 164 transitions, 1718 flow [2024-06-27 23:38:20,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 164 transitions, 1645 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-27 23:38:20,279 INFO L231 Difference]: Finished difference. Result has 173 places, 154 transitions, 1352 flow [2024-06-27 23:38:20,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1275, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1352, PETRI_PLACES=173, PETRI_TRANSITIONS=154} [2024-06-27 23:38:20,280 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 141 predicate places. [2024-06-27 23:38:20,280 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 154 transitions, 1352 flow [2024-06-27 23:38:20,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:20,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:20,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:20,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 23:38:20,284 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:38:20,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:20,284 INFO L85 PathProgramCache]: Analyzing trace with hash -2033830942, now seen corresponding path program 2 times [2024-06-27 23:38:20,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:20,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547960476] [2024-06-27 23:38:20,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:20,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:20,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:21,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:21,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:21,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547960476] [2024-06-27 23:38:21,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547960476] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:21,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:21,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:38:21,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680591213] [2024-06-27 23:38:21,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:21,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:38:21,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:21,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:38:21,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:38:21,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:38:21,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 154 transitions, 1352 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:21,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:21,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:38:21,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:21,705 INFO L124 PetriNetUnfolderBase]: 368/658 cut-off events. [2024-06-27 23:38:21,705 INFO L125 PetriNetUnfolderBase]: For 57777/57777 co-relation queries the response was YES. [2024-06-27 23:38:21,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5209 conditions, 658 events. 368/658 cut-off events. For 57777/57777 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2823 event pairs, 56 based on Foata normal form. 1/658 useless extension candidates. Maximal degree in co-relation 5127. Up to 566 conditions per place. [2024-06-27 23:38:21,710 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 130 selfloop transitions, 36 changer transitions 0/169 dead transitions. [2024-06-27 23:38:21,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 169 transitions, 1874 flow [2024-06-27 23:38:21,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:38:21,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:38:21,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-27 23:38:21,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4006734006734007 [2024-06-27 23:38:21,711 INFO L175 Difference]: Start difference. First operand has 173 places, 154 transitions, 1352 flow. Second operand 9 states and 119 transitions. [2024-06-27 23:38:21,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 169 transitions, 1874 flow [2024-06-27 23:38:21,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 169 transitions, 1813 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-27 23:38:21,802 INFO L231 Difference]: Finished difference. Result has 175 places, 158 transitions, 1428 flow [2024-06-27 23:38:21,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1291, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1428, PETRI_PLACES=175, PETRI_TRANSITIONS=158} [2024-06-27 23:38:21,802 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 143 predicate places. [2024-06-27 23:38:21,802 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 158 transitions, 1428 flow [2024-06-27 23:38:21,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:21,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:21,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:21,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 23:38:21,803 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:38:21,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:21,803 INFO L85 PathProgramCache]: Analyzing trace with hash -128647336, now seen corresponding path program 3 times [2024-06-27 23:38:21,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:21,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189785553] [2024-06-27 23:38:21,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:21,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:21,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:23,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:23,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:23,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189785553] [2024-06-27 23:38:23,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189785553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:23,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:23,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:38:23,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693959233] [2024-06-27 23:38:23,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:23,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:38:23,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:23,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:38:23,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:38:23,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:38:23,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 158 transitions, 1428 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:23,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:23,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:38:23,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:23,734 INFO L124 PetriNetUnfolderBase]: 356/649 cut-off events. [2024-06-27 23:38:23,734 INFO L125 PetriNetUnfolderBase]: For 60664/60664 co-relation queries the response was YES. [2024-06-27 23:38:23,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5250 conditions, 649 events. 356/649 cut-off events. For 60664/60664 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2849 event pairs, 55 based on Foata normal form. 1/649 useless extension candidates. Maximal degree in co-relation 5167. Up to 491 conditions per place. [2024-06-27 23:38:23,739 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 113 selfloop transitions, 35 changer transitions 0/170 dead transitions. [2024-06-27 23:38:23,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 170 transitions, 1782 flow [2024-06-27 23:38:23,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:38:23,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:38:23,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-27 23:38:23,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41515151515151516 [2024-06-27 23:38:23,740 INFO L175 Difference]: Start difference. First operand has 175 places, 158 transitions, 1428 flow. Second operand 10 states and 137 transitions. [2024-06-27 23:38:23,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 170 transitions, 1782 flow [2024-06-27 23:38:23,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 170 transitions, 1717 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-27 23:38:23,833 INFO L231 Difference]: Finished difference. Result has 180 places, 160 transitions, 1474 flow [2024-06-27 23:38:23,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1363, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1474, PETRI_PLACES=180, PETRI_TRANSITIONS=160} [2024-06-27 23:38:23,834 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 148 predicate places. [2024-06-27 23:38:23,834 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 160 transitions, 1474 flow [2024-06-27 23:38:23,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:23,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:23,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:23,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 23:38:23,835 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:38:23,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:23,835 INFO L85 PathProgramCache]: Analyzing trace with hash -128647150, now seen corresponding path program 3 times [2024-06-27 23:38:23,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:23,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396612450] [2024-06-27 23:38:23,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:23,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:23,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:25,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:25,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:25,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396612450] [2024-06-27 23:38:25,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396612450] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:25,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:25,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:38:25,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677177305] [2024-06-27 23:38:25,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:25,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:38:25,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:25,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:38:25,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:38:25,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:38:25,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 160 transitions, 1474 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:25,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:25,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:38:25,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:25,403 INFO L124 PetriNetUnfolderBase]: 369/662 cut-off events. [2024-06-27 23:38:25,403 INFO L125 PetriNetUnfolderBase]: For 61018/61018 co-relation queries the response was YES. [2024-06-27 23:38:25,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5360 conditions, 662 events. 369/662 cut-off events. For 61018/61018 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2858 event pairs, 56 based on Foata normal form. 1/662 useless extension candidates. Maximal degree in co-relation 5275. Up to 569 conditions per place. [2024-06-27 23:38:25,408 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 132 selfloop transitions, 35 changer transitions 0/170 dead transitions. [2024-06-27 23:38:25,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 170 transitions, 1834 flow [2024-06-27 23:38:25,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:38:25,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:38:25,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-27 23:38:25,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4006734006734007 [2024-06-27 23:38:25,409 INFO L175 Difference]: Start difference. First operand has 180 places, 160 transitions, 1474 flow. Second operand 9 states and 119 transitions. [2024-06-27 23:38:25,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 170 transitions, 1834 flow [2024-06-27 23:38:25,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 170 transitions, 1727 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-27 23:38:25,493 INFO L231 Difference]: Finished difference. Result has 181 places, 160 transitions, 1442 flow [2024-06-27 23:38:25,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1367, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1442, PETRI_PLACES=181, PETRI_TRANSITIONS=160} [2024-06-27 23:38:25,494 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 149 predicate places. [2024-06-27 23:38:25,494 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 160 transitions, 1442 flow [2024-06-27 23:38:25,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:25,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:25,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:25,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 23:38:25,495 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:38:25,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:25,495 INFO L85 PathProgramCache]: Analyzing trace with hash 13515608, now seen corresponding path program 4 times [2024-06-27 23:38:25,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:25,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236913251] [2024-06-27 23:38:25,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:25,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:25,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:27,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:27,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:27,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236913251] [2024-06-27 23:38:27,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236913251] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:27,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:27,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:38:27,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135573927] [2024-06-27 23:38:27,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:27,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:38:27,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:27,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:38:27,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:38:27,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:38:27,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 160 transitions, 1442 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:27,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:27,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:38:27,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:27,571 INFO L124 PetriNetUnfolderBase]: 357/653 cut-off events. [2024-06-27 23:38:27,571 INFO L125 PetriNetUnfolderBase]: For 63540/63540 co-relation queries the response was YES. [2024-06-27 23:38:27,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5326 conditions, 653 events. 357/653 cut-off events. For 63540/63540 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2883 event pairs, 55 based on Foata normal form. 1/653 useless extension candidates. Maximal degree in co-relation 5240. Up to 488 conditions per place. [2024-06-27 23:38:27,576 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 111 selfloop transitions, 38 changer transitions 0/171 dead transitions. [2024-06-27 23:38:27,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 171 transitions, 1798 flow [2024-06-27 23:38:27,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:38:27,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:38:27,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-06-27 23:38:27,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41818181818181815 [2024-06-27 23:38:27,577 INFO L175 Difference]: Start difference. First operand has 181 places, 160 transitions, 1442 flow. Second operand 10 states and 138 transitions. [2024-06-27 23:38:27,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 171 transitions, 1798 flow [2024-06-27 23:38:27,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 171 transitions, 1714 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 23:38:27,669 INFO L231 Difference]: Finished difference. Result has 183 places, 162 transitions, 1479 flow [2024-06-27 23:38:27,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1358, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1479, PETRI_PLACES=183, PETRI_TRANSITIONS=162} [2024-06-27 23:38:27,669 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 151 predicate places. [2024-06-27 23:38:27,669 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 162 transitions, 1479 flow [2024-06-27 23:38:27,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:27,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:27,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:27,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 23:38:27,670 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:38:27,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:27,670 INFO L85 PathProgramCache]: Analyzing trace with hash 43842740, now seen corresponding path program 4 times [2024-06-27 23:38:27,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:27,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259007189] [2024-06-27 23:38:27,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:27,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:27,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:28,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:28,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:28,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259007189] [2024-06-27 23:38:28,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259007189] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:28,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:28,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:38:28,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419086378] [2024-06-27 23:38:28,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:28,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:38:28,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:28,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:38:28,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:38:28,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:38:28,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 162 transitions, 1479 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:28,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:28,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:38:28,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:29,131 INFO L124 PetriNetUnfolderBase]: 380/682 cut-off events. [2024-06-27 23:38:29,131 INFO L125 PetriNetUnfolderBase]: For 68445/68445 co-relation queries the response was YES. [2024-06-27 23:38:29,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5630 conditions, 682 events. 380/682 cut-off events. For 68445/68445 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2959 event pairs, 68 based on Foata normal form. 1/682 useless extension candidates. Maximal degree in co-relation 5543. Up to 560 conditions per place. [2024-06-27 23:38:29,136 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 128 selfloop transitions, 45 changer transitions 0/176 dead transitions. [2024-06-27 23:38:29,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 176 transitions, 2027 flow [2024-06-27 23:38:29,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:38:29,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:38:29,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 122 transitions. [2024-06-27 23:38:29,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107744107744108 [2024-06-27 23:38:29,137 INFO L175 Difference]: Start difference. First operand has 183 places, 162 transitions, 1479 flow. Second operand 9 states and 122 transitions. [2024-06-27 23:38:29,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 176 transitions, 2027 flow [2024-06-27 23:38:29,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 176 transitions, 1922 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-27 23:38:29,226 INFO L231 Difference]: Finished difference. Result has 184 places, 166 transitions, 1537 flow [2024-06-27 23:38:29,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1374, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1537, PETRI_PLACES=184, PETRI_TRANSITIONS=166} [2024-06-27 23:38:29,226 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 152 predicate places. [2024-06-27 23:38:29,226 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 166 transitions, 1537 flow [2024-06-27 23:38:29,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:29,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:29,227 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:29,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 23:38:29,227 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:38:29,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:29,227 INFO L85 PathProgramCache]: Analyzing trace with hash 13752944, now seen corresponding path program 5 times [2024-06-27 23:38:29,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:29,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724931008] [2024-06-27 23:38:29,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:29,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:29,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:30,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:30,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:30,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724931008] [2024-06-27 23:38:30,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724931008] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:30,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:30,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:38:30,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661270221] [2024-06-27 23:38:30,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:30,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:38:30,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:30,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:38:30,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:38:30,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:38:30,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 166 transitions, 1537 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:30,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:30,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:38:30,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:30,794 INFO L124 PetriNetUnfolderBase]: 383/687 cut-off events. [2024-06-27 23:38:30,794 INFO L125 PetriNetUnfolderBase]: For 69716/69716 co-relation queries the response was YES. [2024-06-27 23:38:30,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5736 conditions, 687 events. 383/687 cut-off events. For 69716/69716 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2994 event pairs, 56 based on Foata normal form. 1/687 useless extension candidates. Maximal degree in co-relation 5648. Up to 564 conditions per place. [2024-06-27 23:38:30,800 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 126 selfloop transitions, 49 changer transitions 0/178 dead transitions. [2024-06-27 23:38:30,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 178 transitions, 2063 flow [2024-06-27 23:38:30,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:38:30,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:38:30,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 121 transitions. [2024-06-27 23:38:30,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4074074074074074 [2024-06-27 23:38:30,801 INFO L175 Difference]: Start difference. First operand has 184 places, 166 transitions, 1537 flow. Second operand 9 states and 121 transitions. [2024-06-27 23:38:30,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 178 transitions, 2063 flow [2024-06-27 23:38:30,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 178 transitions, 1942 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-27 23:38:30,897 INFO L231 Difference]: Finished difference. Result has 187 places, 168 transitions, 1555 flow [2024-06-27 23:38:30,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1424, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1555, PETRI_PLACES=187, PETRI_TRANSITIONS=168} [2024-06-27 23:38:30,897 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 155 predicate places. [2024-06-27 23:38:30,897 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 168 transitions, 1555 flow [2024-06-27 23:38:30,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:30,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:30,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:30,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 23:38:30,898 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:38:30,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:30,898 INFO L85 PathProgramCache]: Analyzing trace with hash 43849498, now seen corresponding path program 2 times [2024-06-27 23:38:30,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:30,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750113296] [2024-06-27 23:38:30,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:30,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:30,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:32,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:32,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:32,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750113296] [2024-06-27 23:38:32,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750113296] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:32,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:32,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:38:32,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649568988] [2024-06-27 23:38:32,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:32,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:38:32,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:32,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:38:32,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:38:32,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:38:32,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 168 transitions, 1555 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:32,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:32,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:38:32,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:32,430 INFO L124 PetriNetUnfolderBase]: 391/700 cut-off events. [2024-06-27 23:38:32,431 INFO L125 PetriNetUnfolderBase]: For 73595/73595 co-relation queries the response was YES. [2024-06-27 23:38:32,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5875 conditions, 700 events. 391/700 cut-off events. For 73595/73595 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3064 event pairs, 52 based on Foata normal form. 1/700 useless extension candidates. Maximal degree in co-relation 5786. Up to 611 conditions per place. [2024-06-27 23:38:32,436 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 146 selfloop transitions, 33 changer transitions 0/182 dead transitions. [2024-06-27 23:38:32,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 182 transitions, 2107 flow [2024-06-27 23:38:32,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:38:32,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:38:32,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-27 23:38:32,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4006734006734007 [2024-06-27 23:38:32,437 INFO L175 Difference]: Start difference. First operand has 187 places, 168 transitions, 1555 flow. Second operand 9 states and 119 transitions. [2024-06-27 23:38:32,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 182 transitions, 2107 flow [2024-06-27 23:38:32,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 182 transitions, 2010 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-27 23:38:32,542 INFO L231 Difference]: Finished difference. Result has 190 places, 172 transitions, 1585 flow [2024-06-27 23:38:32,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1458, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1585, PETRI_PLACES=190, PETRI_TRANSITIONS=172} [2024-06-27 23:38:32,543 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 158 predicate places. [2024-06-27 23:38:32,543 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 172 transitions, 1585 flow [2024-06-27 23:38:32,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:32,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:32,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:32,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 23:38:32,544 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:38:32,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:32,545 INFO L85 PathProgramCache]: Analyzing trace with hash 43849250, now seen corresponding path program 6 times [2024-06-27 23:38:32,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:32,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549541691] [2024-06-27 23:38:32,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:32,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:32,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:33,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:33,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:33,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549541691] [2024-06-27 23:38:33,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549541691] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:33,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:33,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:38:33,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629696701] [2024-06-27 23:38:33,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:33,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:38:33,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:33,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:38:33,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:38:33,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:38:33,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 172 transitions, 1585 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:33,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:33,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:38:33,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:34,005 INFO L124 PetriNetUnfolderBase]: 389/697 cut-off events. [2024-06-27 23:38:34,005 INFO L125 PetriNetUnfolderBase]: For 74273/74273 co-relation queries the response was YES. [2024-06-27 23:38:34,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5833 conditions, 697 events. 389/697 cut-off events. For 74273/74273 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3051 event pairs, 56 based on Foata normal form. 1/697 useless extension candidates. Maximal degree in co-relation 5743. Up to 575 conditions per place. [2024-06-27 23:38:34,011 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 132 selfloop transitions, 46 changer transitions 0/181 dead transitions. [2024-06-27 23:38:34,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 181 transitions, 1963 flow [2024-06-27 23:38:34,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:38:34,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:38:34,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 122 transitions. [2024-06-27 23:38:34,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107744107744108 [2024-06-27 23:38:34,012 INFO L175 Difference]: Start difference. First operand has 190 places, 172 transitions, 1585 flow. Second operand 9 states and 122 transitions. [2024-06-27 23:38:34,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 181 transitions, 1963 flow [2024-06-27 23:38:34,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 181 transitions, 1887 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-27 23:38:34,128 INFO L231 Difference]: Finished difference. Result has 194 places, 172 transitions, 1606 flow [2024-06-27 23:38:34,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1509, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1606, PETRI_PLACES=194, PETRI_TRANSITIONS=172} [2024-06-27 23:38:34,129 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 162 predicate places. [2024-06-27 23:38:34,129 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 172 transitions, 1606 flow [2024-06-27 23:38:34,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:34,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:34,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:34,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 23:38:34,129 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:38:34,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:34,130 INFO L85 PathProgramCache]: Analyzing trace with hash 44088508, now seen corresponding path program 3 times [2024-06-27 23:38:34,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:34,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363601024] [2024-06-27 23:38:34,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:34,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:34,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:35,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:35,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:35,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363601024] [2024-06-27 23:38:35,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363601024] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:35,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:35,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:38:35,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345607951] [2024-06-27 23:38:35,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:35,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:38:35,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:35,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:38:35,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:38:35,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:38:35,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 172 transitions, 1606 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:35,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:35,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:38:35,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:35,755 INFO L124 PetriNetUnfolderBase]: 392/702 cut-off events. [2024-06-27 23:38:35,755 INFO L125 PetriNetUnfolderBase]: For 76744/76744 co-relation queries the response was YES. [2024-06-27 23:38:35,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5947 conditions, 702 events. 392/702 cut-off events. For 76744/76744 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3079 event pairs, 52 based on Foata normal form. 1/702 useless extension candidates. Maximal degree in co-relation 5855. Up to 612 conditions per place. [2024-06-27 23:38:35,761 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 143 selfloop transitions, 38 changer transitions 0/184 dead transitions. [2024-06-27 23:38:35,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 184 transitions, 2142 flow [2024-06-27 23:38:35,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:38:35,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:38:35,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-27 23:38:35,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-27 23:38:35,763 INFO L175 Difference]: Start difference. First operand has 194 places, 172 transitions, 1606 flow. Second operand 9 states and 117 transitions. [2024-06-27 23:38:35,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 184 transitions, 2142 flow [2024-06-27 23:38:35,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 184 transitions, 2024 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 23:38:35,882 INFO L231 Difference]: Finished difference. Result has 194 places, 174 transitions, 1597 flow [2024-06-27 23:38:35,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1488, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1597, PETRI_PLACES=194, PETRI_TRANSITIONS=174} [2024-06-27 23:38:35,882 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 162 predicate places. [2024-06-27 23:38:35,882 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 174 transitions, 1597 flow [2024-06-27 23:38:35,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:35,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:35,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:35,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 23:38:35,883 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:38:35,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:35,883 INFO L85 PathProgramCache]: Analyzing trace with hash 44080138, now seen corresponding path program 4 times [2024-06-27 23:38:35,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:35,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178454099] [2024-06-27 23:38:35,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:35,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:35,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:37,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:37,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:37,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178454099] [2024-06-27 23:38:37,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178454099] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:37,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:37,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:38:37,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726869945] [2024-06-27 23:38:37,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:37,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:38:37,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:37,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:38:37,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:38:37,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:38:37,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 174 transitions, 1597 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:37,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:37,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:38:37,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:37,454 INFO L124 PetriNetUnfolderBase]: 390/699 cut-off events. [2024-06-27 23:38:37,454 INFO L125 PetriNetUnfolderBase]: For 77242/77242 co-relation queries the response was YES. [2024-06-27 23:38:37,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5880 conditions, 699 events. 390/699 cut-off events. For 77242/77242 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3074 event pairs, 52 based on Foata normal form. 1/699 useless extension candidates. Maximal degree in co-relation 5787. Up to 610 conditions per place. [2024-06-27 23:38:37,460 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 144 selfloop transitions, 36 changer transitions 0/183 dead transitions. [2024-06-27 23:38:37,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 183 transitions, 1979 flow [2024-06-27 23:38:37,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:38:37,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:38:37,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-27 23:38:37,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-27 23:38:37,461 INFO L175 Difference]: Start difference. First operand has 194 places, 174 transitions, 1597 flow. Second operand 9 states and 117 transitions. [2024-06-27 23:38:37,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 183 transitions, 1979 flow [2024-06-27 23:38:37,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 183 transitions, 1878 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-27 23:38:37,585 INFO L231 Difference]: Finished difference. Result has 197 places, 174 transitions, 1573 flow [2024-06-27 23:38:37,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1496, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1573, PETRI_PLACES=197, PETRI_TRANSITIONS=174} [2024-06-27 23:38:37,585 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 165 predicate places. [2024-06-27 23:38:37,585 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 174 transitions, 1573 flow [2024-06-27 23:38:37,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:37,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:37,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:37,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 23:38:37,586 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:38:37,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:37,586 INFO L85 PathProgramCache]: Analyzing trace with hash 44088818, now seen corresponding path program 1 times [2024-06-27 23:38:37,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:37,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856991773] [2024-06-27 23:38:37,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:37,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:37,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:38,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:38,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:38,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856991773] [2024-06-27 23:38:38,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856991773] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:38,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:38,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:38:38,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665770653] [2024-06-27 23:38:38,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:38,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:38:38,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:38,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:38:38,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:38:38,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-06-27 23:38:38,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 174 transitions, 1573 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:38,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:38,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-06-27 23:38:38,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:39,166 INFO L124 PetriNetUnfolderBase]: 370/677 cut-off events. [2024-06-27 23:38:39,166 INFO L125 PetriNetUnfolderBase]: For 80095/80096 co-relation queries the response was YES. [2024-06-27 23:38:39,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5734 conditions, 677 events. 370/677 cut-off events. For 80095/80096 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3043 event pairs, 51 based on Foata normal form. 2/675 useless extension candidates. Maximal degree in co-relation 5640. Up to 561 conditions per place. [2024-06-27 23:38:39,171 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 135 selfloop transitions, 23 changer transitions 0/186 dead transitions. [2024-06-27 23:38:39,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 186 transitions, 1933 flow [2024-06-27 23:38:39,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:38:39,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:38:39,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 117 transitions. [2024-06-27 23:38:39,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4431818181818182 [2024-06-27 23:38:39,172 INFO L175 Difference]: Start difference. First operand has 197 places, 174 transitions, 1573 flow. Second operand 8 states and 117 transitions. [2024-06-27 23:38:39,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 186 transitions, 1933 flow [2024-06-27 23:38:39,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 186 transitions, 1842 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 23:38:39,299 INFO L231 Difference]: Finished difference. Result has 196 places, 176 transitions, 1558 flow [2024-06-27 23:38:39,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1482, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1558, PETRI_PLACES=196, PETRI_TRANSITIONS=176} [2024-06-27 23:38:39,299 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 164 predicate places. [2024-06-27 23:38:39,299 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 176 transitions, 1558 flow [2024-06-27 23:38:39,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:39,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:39,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:39,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 23:38:39,300 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:38:39,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:39,300 INFO L85 PathProgramCache]: Analyzing trace with hash 85732860, now seen corresponding path program 5 times [2024-06-27 23:38:39,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:39,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257071122] [2024-06-27 23:38:39,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:39,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:39,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:40,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:40,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:40,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257071122] [2024-06-27 23:38:40,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257071122] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:40,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:40,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:38:40,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195361508] [2024-06-27 23:38:40,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:40,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:38:40,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:40,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:38:40,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:38:40,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:38:40,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 176 transitions, 1558 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:40,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:40,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:38:40,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:40,767 INFO L124 PetriNetUnfolderBase]: 401/717 cut-off events. [2024-06-27 23:38:40,767 INFO L125 PetriNetUnfolderBase]: For 83772/83772 co-relation queries the response was YES. [2024-06-27 23:38:40,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6110 conditions, 717 events. 401/717 cut-off events. For 83772/83772 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3167 event pairs, 55 based on Foata normal form. 1/717 useless extension candidates. Maximal degree in co-relation 6016. Up to 532 conditions per place. [2024-06-27 23:38:40,773 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 122 selfloop transitions, 67 changer transitions 0/192 dead transitions. [2024-06-27 23:38:40,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 192 transitions, 2304 flow [2024-06-27 23:38:40,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:38:40,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:38:40,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-27 23:38:40,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40404040404040403 [2024-06-27 23:38:40,775 INFO L175 Difference]: Start difference. First operand has 196 places, 176 transitions, 1558 flow. Second operand 9 states and 120 transitions. [2024-06-27 23:38:40,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 192 transitions, 2304 flow [2024-06-27 23:38:40,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 192 transitions, 2246 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-27 23:38:40,912 INFO L231 Difference]: Finished difference. Result has 199 places, 182 transitions, 1733 flow [2024-06-27 23:38:40,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1500, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1733, PETRI_PLACES=199, PETRI_TRANSITIONS=182} [2024-06-27 23:38:40,913 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 167 predicate places. [2024-06-27 23:38:40,913 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 182 transitions, 1733 flow [2024-06-27 23:38:40,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:40,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:40,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:40,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 23:38:40,914 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:38:40,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:40,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1741043842, now seen corresponding path program 7 times [2024-06-27 23:38:40,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:40,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177955269] [2024-06-27 23:38:40,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:40,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:40,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:42,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:42,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:42,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177955269] [2024-06-27 23:38:42,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177955269] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:42,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:42,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:38:42,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210369283] [2024-06-27 23:38:42,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:42,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:38:42,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:42,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:38:42,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:38:42,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:38:42,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 182 transitions, 1733 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:42,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:42,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:38:42,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:42,384 INFO L124 PetriNetUnfolderBase]: 404/722 cut-off events. [2024-06-27 23:38:42,384 INFO L125 PetriNetUnfolderBase]: For 86716/86716 co-relation queries the response was YES. [2024-06-27 23:38:42,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6293 conditions, 722 events. 404/722 cut-off events. For 86716/86716 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3188 event pairs, 61 based on Foata normal form. 1/722 useless extension candidates. Maximal degree in co-relation 6197. Up to 494 conditions per place. [2024-06-27 23:38:42,389 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 107 selfloop transitions, 85 changer transitions 0/195 dead transitions. [2024-06-27 23:38:42,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 195 transitions, 2331 flow [2024-06-27 23:38:42,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:38:42,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:38:42,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-27 23:38:42,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40404040404040403 [2024-06-27 23:38:42,391 INFO L175 Difference]: Start difference. First operand has 199 places, 182 transitions, 1733 flow. Second operand 9 states and 120 transitions. [2024-06-27 23:38:42,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 195 transitions, 2331 flow [2024-06-27 23:38:42,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 195 transitions, 2243 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-27 23:38:42,562 INFO L231 Difference]: Finished difference. Result has 204 places, 186 transitions, 1888 flow [2024-06-27 23:38:42,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1645, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1888, PETRI_PLACES=204, PETRI_TRANSITIONS=186} [2024-06-27 23:38:42,563 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 172 predicate places. [2024-06-27 23:38:42,563 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 186 transitions, 1888 flow [2024-06-27 23:38:42,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:42,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:42,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:42,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 23:38:42,564 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:38:42,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:42,564 INFO L85 PathProgramCache]: Analyzing trace with hash -339557350, now seen corresponding path program 6 times [2024-06-27 23:38:42,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:42,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240387827] [2024-06-27 23:38:42,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:42,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:42,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:43,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:43,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:43,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240387827] [2024-06-27 23:38:43,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240387827] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:43,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:43,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:38:43,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414261959] [2024-06-27 23:38:43,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:43,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:38:43,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:43,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:38:43,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:38:44,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:38:44,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 186 transitions, 1888 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:44,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:44,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:38:44,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:44,236 INFO L124 PetriNetUnfolderBase]: 407/727 cut-off events. [2024-06-27 23:38:44,236 INFO L125 PetriNetUnfolderBase]: For 89407/89407 co-relation queries the response was YES. [2024-06-27 23:38:44,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6479 conditions, 727 events. 407/727 cut-off events. For 89407/89407 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3210 event pairs, 55 based on Foata normal form. 1/727 useless extension candidates. Maximal degree in co-relation 6381. Up to 541 conditions per place. [2024-06-27 23:38:44,242 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 127 selfloop transitions, 68 changer transitions 0/198 dead transitions. [2024-06-27 23:38:44,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 198 transitions, 2590 flow [2024-06-27 23:38:44,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:38:44,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:38:44,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 121 transitions. [2024-06-27 23:38:44,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4074074074074074 [2024-06-27 23:38:44,243 INFO L175 Difference]: Start difference. First operand has 204 places, 186 transitions, 1888 flow. Second operand 9 states and 121 transitions. [2024-06-27 23:38:44,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 198 transitions, 2590 flow [2024-06-27 23:38:44,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 198 transitions, 2484 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-27 23:38:44,438 INFO L231 Difference]: Finished difference. Result has 208 places, 188 transitions, 1949 flow [2024-06-27 23:38:44,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1782, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1949, PETRI_PLACES=208, PETRI_TRANSITIONS=188} [2024-06-27 23:38:44,438 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 176 predicate places. [2024-06-27 23:38:44,438 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 188 transitions, 1949 flow [2024-06-27 23:38:44,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:44,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:44,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:44,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 23:38:44,439 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:38:44,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:44,439 INFO L85 PathProgramCache]: Analyzing trace with hash -329081520, now seen corresponding path program 2 times [2024-06-27 23:38:44,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:44,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135146221] [2024-06-27 23:38:44,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:44,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:44,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:45,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:45,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:45,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135146221] [2024-06-27 23:38:45,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135146221] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:45,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:45,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:38:45,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812806709] [2024-06-27 23:38:45,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:45,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:38:45,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:45,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:38:45,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:38:45,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:38:45,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 188 transitions, 1949 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:45,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:45,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:38:45,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:46,208 INFO L124 PetriNetUnfolderBase]: 387/704 cut-off events. [2024-06-27 23:38:46,209 INFO L125 PetriNetUnfolderBase]: For 92611/92612 co-relation queries the response was YES. [2024-06-27 23:38:46,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6406 conditions, 704 events. 387/704 cut-off events. For 92611/92612 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3184 event pairs, 62 based on Foata normal form. 2/700 useless extension candidates. Maximal degree in co-relation 6306. Up to 601 conditions per place. [2024-06-27 23:38:46,214 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 150 selfloop transitions, 16 changer transitions 0/198 dead transitions. [2024-06-27 23:38:46,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 198 transitions, 2323 flow [2024-06-27 23:38:46,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:38:46,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:38:46,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-27 23:38:46,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3872053872053872 [2024-06-27 23:38:46,215 INFO L175 Difference]: Start difference. First operand has 208 places, 188 transitions, 1949 flow. Second operand 9 states and 115 transitions. [2024-06-27 23:38:46,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 198 transitions, 2323 flow [2024-06-27 23:38:46,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 198 transitions, 2180 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-27 23:38:46,444 INFO L231 Difference]: Finished difference. Result has 211 places, 190 transitions, 1871 flow [2024-06-27 23:38:46,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1806, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1871, PETRI_PLACES=211, PETRI_TRANSITIONS=190} [2024-06-27 23:38:46,445 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 179 predicate places. [2024-06-27 23:38:46,445 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 190 transitions, 1871 flow [2024-06-27 23:38:46,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:46,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:46,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:46,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 23:38:46,446 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:38:46,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:46,446 INFO L85 PathProgramCache]: Analyzing trace with hash -329437710, now seen corresponding path program 3 times [2024-06-27 23:38:46,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:46,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870131091] [2024-06-27 23:38:46,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:46,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:46,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:47,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:47,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:47,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870131091] [2024-06-27 23:38:47,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870131091] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:47,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:47,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:38:47,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70812880] [2024-06-27 23:38:47,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:47,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:38:47,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:47,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:38:47,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:38:47,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-06-27 23:38:47,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 190 transitions, 1871 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:47,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:47,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-06-27 23:38:47,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:48,101 INFO L124 PetriNetUnfolderBase]: 389/710 cut-off events. [2024-06-27 23:38:48,101 INFO L125 PetriNetUnfolderBase]: For 95029/95030 co-relation queries the response was YES. [2024-06-27 23:38:48,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6406 conditions, 710 events. 389/710 cut-off events. For 95029/95030 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3240 event pairs, 53 based on Foata normal form. 2/708 useless extension candidates. Maximal degree in co-relation 6305. Up to 544 conditions per place. [2024-06-27 23:38:48,107 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 131 selfloop transitions, 40 changer transitions 0/203 dead transitions. [2024-06-27 23:38:48,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 203 transitions, 2425 flow [2024-06-27 23:38:48,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:38:48,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:38:48,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 121 transitions. [2024-06-27 23:38:48,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-27 23:38:48,109 INFO L175 Difference]: Start difference. First operand has 211 places, 190 transitions, 1871 flow. Second operand 8 states and 121 transitions. [2024-06-27 23:38:48,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 203 transitions, 2425 flow [2024-06-27 23:38:48,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 203 transitions, 2376 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-27 23:38:48,284 INFO L231 Difference]: Finished difference. Result has 212 places, 194 transitions, 1967 flow [2024-06-27 23:38:48,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1822, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1967, PETRI_PLACES=212, PETRI_TRANSITIONS=194} [2024-06-27 23:38:48,285 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 180 predicate places. [2024-06-27 23:38:48,285 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 194 transitions, 1967 flow [2024-06-27 23:38:48,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:48,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:48,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:48,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 23:38:48,286 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:38:48,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:48,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1732769632, now seen corresponding path program 8 times [2024-06-27 23:38:48,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:48,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772655102] [2024-06-27 23:38:48,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:48,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:48,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:49,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:49,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:49,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772655102] [2024-06-27 23:38:49,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772655102] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:49,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:49,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:38:49,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905111589] [2024-06-27 23:38:49,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:49,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:38:49,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:49,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:38:49,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:38:49,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:38:49,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 194 transitions, 1967 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:49,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:49,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:38:49,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:49,808 INFO L124 PetriNetUnfolderBase]: 426/758 cut-off events. [2024-06-27 23:38:49,808 INFO L125 PetriNetUnfolderBase]: For 102097/102097 co-relation queries the response was YES. [2024-06-27 23:38:49,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7001 conditions, 758 events. 426/758 cut-off events. For 102097/102097 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3351 event pairs, 61 based on Foata normal form. 1/758 useless extension candidates. Maximal degree in co-relation 6900. Up to 525 conditions per place. [2024-06-27 23:38:49,815 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 132 selfloop transitions, 76 changer transitions 0/211 dead transitions. [2024-06-27 23:38:49,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 211 transitions, 2923 flow [2024-06-27 23:38:49,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:38:49,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:38:49,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 124 transitions. [2024-06-27 23:38:49,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4175084175084175 [2024-06-27 23:38:49,817 INFO L175 Difference]: Start difference. First operand has 212 places, 194 transitions, 1967 flow. Second operand 9 states and 124 transitions. [2024-06-27 23:38:49,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 211 transitions, 2923 flow [2024-06-27 23:38:50,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 211 transitions, 2859 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-27 23:38:50,018 INFO L231 Difference]: Finished difference. Result has 217 places, 200 transitions, 2162 flow [2024-06-27 23:38:50,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1903, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2162, PETRI_PLACES=217, PETRI_TRANSITIONS=200} [2024-06-27 23:38:50,019 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 185 predicate places. [2024-06-27 23:38:50,019 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 200 transitions, 2162 flow [2024-06-27 23:38:50,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:50,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:50,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:50,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 23:38:50,019 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:38:50,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:50,020 INFO L85 PathProgramCache]: Analyzing trace with hash -564516462, now seen corresponding path program 4 times [2024-06-27 23:38:50,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:50,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024215646] [2024-06-27 23:38:50,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:50,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:50,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:51,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:51,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:51,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024215646] [2024-06-27 23:38:51,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024215646] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:51,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:51,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:38:51,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490820037] [2024-06-27 23:38:51,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:51,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:38:51,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:51,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:38:51,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:38:51,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-06-27 23:38:51,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 200 transitions, 2162 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:51,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:51,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-06-27 23:38:51,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:51,707 INFO L124 PetriNetUnfolderBase]: 404/735 cut-off events. [2024-06-27 23:38:51,708 INFO L125 PetriNetUnfolderBase]: For 106079/106080 co-relation queries the response was YES. [2024-06-27 23:38:51,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6997 conditions, 735 events. 404/735 cut-off events. For 106079/106080 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3360 event pairs, 53 based on Foata normal form. 2/733 useless extension candidates. Maximal degree in co-relation 6893. Up to 568 conditions per place. [2024-06-27 23:38:51,714 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 140 selfloop transitions, 39 changer transitions 0/211 dead transitions. [2024-06-27 23:38:51,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 211 transitions, 2708 flow [2024-06-27 23:38:51,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:38:51,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:38:51,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 122 transitions. [2024-06-27 23:38:51,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4621212121212121 [2024-06-27 23:38:51,716 INFO L175 Difference]: Start difference. First operand has 217 places, 200 transitions, 2162 flow. Second operand 8 states and 122 transitions. [2024-06-27 23:38:51,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 211 transitions, 2708 flow [2024-06-27 23:38:51,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 211 transitions, 2584 flow, removed 19 selfloop flow, removed 4 redundant places. [2024-06-27 23:38:51,930 INFO L231 Difference]: Finished difference. Result has 221 places, 202 transitions, 2149 flow [2024-06-27 23:38:51,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2038, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2149, PETRI_PLACES=221, PETRI_TRANSITIONS=202} [2024-06-27 23:38:51,931 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 189 predicate places. [2024-06-27 23:38:51,931 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 202 transitions, 2149 flow [2024-06-27 23:38:51,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:51,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:51,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:51,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 23:38:51,932 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:38:51,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:51,932 INFO L85 PathProgramCache]: Analyzing trace with hash -554397442, now seen corresponding path program 7 times [2024-06-27 23:38:51,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:51,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572477188] [2024-06-27 23:38:51,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:51,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:51,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:53,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:53,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:53,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572477188] [2024-06-27 23:38:53,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572477188] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:53,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:53,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:38:53,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721967458] [2024-06-27 23:38:53,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:53,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:38:53,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:53,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:38:53,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:38:53,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:38:53,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 202 transitions, 2149 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:53,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:53,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:38:53,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:53,584 INFO L124 PetriNetUnfolderBase]: 427/760 cut-off events. [2024-06-27 23:38:53,584 INFO L125 PetriNetUnfolderBase]: For 105471/105471 co-relation queries the response was YES. [2024-06-27 23:38:53,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7062 conditions, 760 events. 427/760 cut-off events. For 105471/105471 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3397 event pairs, 55 based on Foata normal form. 1/760 useless extension candidates. Maximal degree in co-relation 6958. Up to 575 conditions per place. [2024-06-27 23:38:53,598 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 128 selfloop transitions, 80 changer transitions 0/211 dead transitions. [2024-06-27 23:38:53,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 211 transitions, 2727 flow [2024-06-27 23:38:53,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:38:53,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:38:53,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-27 23:38:53,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39730639730639733 [2024-06-27 23:38:53,600 INFO L175 Difference]: Start difference. First operand has 221 places, 202 transitions, 2149 flow. Second operand 9 states and 118 transitions. [2024-06-27 23:38:53,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 211 transitions, 2727 flow [2024-06-27 23:38:53,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 211 transitions, 2634 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-27 23:38:53,828 INFO L231 Difference]: Finished difference. Result has 225 places, 202 transitions, 2221 flow [2024-06-27 23:38:53,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2056, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2221, PETRI_PLACES=225, PETRI_TRANSITIONS=202} [2024-06-27 23:38:53,829 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 193 predicate places. [2024-06-27 23:38:53,829 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 202 transitions, 2221 flow [2024-06-27 23:38:53,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:53,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:53,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:53,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 23:38:53,830 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:38:53,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:53,830 INFO L85 PathProgramCache]: Analyzing trace with hash -849625012, now seen corresponding path program 8 times [2024-06-27 23:38:53,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:53,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533652960] [2024-06-27 23:38:53,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:53,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:53,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:55,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:55,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:55,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533652960] [2024-06-27 23:38:55,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533652960] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:55,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:55,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:38:55,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467780349] [2024-06-27 23:38:55,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:55,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:38:55,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:55,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:38:55,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:38:55,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:38:55,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 202 transitions, 2221 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:55,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:55,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:38:55,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:55,391 INFO L124 PetriNetUnfolderBase]: 440/781 cut-off events. [2024-06-27 23:38:55,391 INFO L125 PetriNetUnfolderBase]: For 113849/113849 co-relation queries the response was YES. [2024-06-27 23:38:55,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7475 conditions, 781 events. 440/781 cut-off events. For 113849/113849 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3510 event pairs, 55 based on Foata normal form. 1/781 useless extension candidates. Maximal degree in co-relation 7369. Up to 591 conditions per place. [2024-06-27 23:38:55,398 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 149 selfloop transitions, 67 changer transitions 0/219 dead transitions. [2024-06-27 23:38:55,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 219 transitions, 3217 flow [2024-06-27 23:38:55,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:38:55,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:38:55,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 124 transitions. [2024-06-27 23:38:55,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4175084175084175 [2024-06-27 23:38:55,400 INFO L175 Difference]: Start difference. First operand has 225 places, 202 transitions, 2221 flow. Second operand 9 states and 124 transitions. [2024-06-27 23:38:55,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 219 transitions, 3217 flow [2024-06-27 23:38:55,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 219 transitions, 3062 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-27 23:38:55,644 INFO L231 Difference]: Finished difference. Result has 226 places, 208 transitions, 2313 flow [2024-06-27 23:38:55,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2078, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2313, PETRI_PLACES=226, PETRI_TRANSITIONS=208} [2024-06-27 23:38:55,645 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 194 predicate places. [2024-06-27 23:38:55,645 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 208 transitions, 2313 flow [2024-06-27 23:38:55,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:55,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:55,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:55,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 23:38:55,645 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:38:55,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:55,646 INFO L85 PathProgramCache]: Analyzing trace with hash -849855652, now seen corresponding path program 9 times [2024-06-27 23:38:55,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:55,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129359149] [2024-06-27 23:38:55,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:55,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:55,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:57,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:57,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:57,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129359149] [2024-06-27 23:38:57,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129359149] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:57,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:57,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:38:57,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093785746] [2024-06-27 23:38:57,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:57,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:38:57,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:57,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:38:57,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:38:57,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:38:57,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 208 transitions, 2313 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:57,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:57,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:38:57,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:57,347 INFO L124 PetriNetUnfolderBase]: 438/778 cut-off events. [2024-06-27 23:38:57,347 INFO L125 PetriNetUnfolderBase]: For 114414/114414 co-relation queries the response was YES. [2024-06-27 23:38:57,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7400 conditions, 778 events. 438/778 cut-off events. For 114414/114414 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3486 event pairs, 55 based on Foata normal form. 1/778 useless extension candidates. Maximal degree in co-relation 7293. Up to 589 conditions per place. [2024-06-27 23:38:57,402 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 145 selfloop transitions, 70 changer transitions 0/218 dead transitions. [2024-06-27 23:38:57,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 218 transitions, 3057 flow [2024-06-27 23:38:57,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:38:57,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:38:57,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 121 transitions. [2024-06-27 23:38:57,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4074074074074074 [2024-06-27 23:38:57,403 INFO L175 Difference]: Start difference. First operand has 226 places, 208 transitions, 2313 flow. Second operand 9 states and 121 transitions. [2024-06-27 23:38:57,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 218 transitions, 3057 flow [2024-06-27 23:38:57,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 218 transitions, 2926 flow, removed 24 selfloop flow, removed 4 redundant places. [2024-06-27 23:38:57,644 INFO L231 Difference]: Finished difference. Result has 231 places, 208 transitions, 2327 flow [2024-06-27 23:38:57,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2182, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2327, PETRI_PLACES=231, PETRI_TRANSITIONS=208} [2024-06-27 23:38:57,645 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 199 predicate places. [2024-06-27 23:38:57,645 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 208 transitions, 2327 flow [2024-06-27 23:38:57,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:57,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:57,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:57,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 23:38:57,646 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:38:57,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:57,647 INFO L85 PathProgramCache]: Analyzing trace with hash -849862596, now seen corresponding path program 5 times [2024-06-27 23:38:57,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:57,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909912700] [2024-06-27 23:38:57,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:57,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:57,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:38:59,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:38:59,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:38:59,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909912700] [2024-06-27 23:38:59,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909912700] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:38:59,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:38:59,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:38:59,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816381938] [2024-06-27 23:38:59,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:38:59,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:38:59,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:38:59,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:38:59,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:38:59,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:38:59,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 208 transitions, 2327 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:59,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:38:59,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:38:59,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:38:59,452 INFO L124 PetriNetUnfolderBase]: 421/764 cut-off events. [2024-06-27 23:38:59,452 INFO L125 PetriNetUnfolderBase]: For 118214/118214 co-relation queries the response was YES. [2024-06-27 23:38:59,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7357 conditions, 764 events. 421/764 cut-off events. For 118214/118214 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3510 event pairs, 62 based on Foata normal form. 1/764 useless extension candidates. Maximal degree in co-relation 7249. Up to 535 conditions per place. [2024-06-27 23:38:59,460 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 128 selfloop transitions, 61 changer transitions 0/219 dead transitions. [2024-06-27 23:38:59,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 219 transitions, 2913 flow [2024-06-27 23:38:59,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:38:59,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:38:59,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 136 transitions. [2024-06-27 23:38:59,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121212121212121 [2024-06-27 23:38:59,461 INFO L175 Difference]: Start difference. First operand has 231 places, 208 transitions, 2327 flow. Second operand 10 states and 136 transitions. [2024-06-27 23:38:59,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 219 transitions, 2913 flow [2024-06-27 23:38:59,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 219 transitions, 2766 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-27 23:38:59,694 INFO L231 Difference]: Finished difference. Result has 233 places, 210 transitions, 2351 flow [2024-06-27 23:38:59,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2180, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2351, PETRI_PLACES=233, PETRI_TRANSITIONS=210} [2024-06-27 23:38:59,694 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 201 predicate places. [2024-06-27 23:38:59,695 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 210 transitions, 2351 flow [2024-06-27 23:38:59,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:38:59,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:38:59,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:38:59,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 23:38:59,703 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:38:59,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:38:59,703 INFO L85 PathProgramCache]: Analyzing trace with hash -849616642, now seen corresponding path program 10 times [2024-06-27 23:38:59,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:38:59,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69403060] [2024-06-27 23:38:59,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:38:59,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:38:59,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:00,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:00,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:00,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69403060] [2024-06-27 23:39:00,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69403060] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:00,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:00,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:39:00,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265556306] [2024-06-27 23:39:00,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:00,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:39:00,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:00,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:39:00,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:39:01,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:39:01,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 210 transitions, 2351 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:01,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:01,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:39:01,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:01,268 INFO L124 PetriNetUnfolderBase]: 439/782 cut-off events. [2024-06-27 23:39:01,268 INFO L125 PetriNetUnfolderBase]: For 119428/119428 co-relation queries the response was YES. [2024-06-27 23:39:01,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7431 conditions, 782 events. 439/782 cut-off events. For 119428/119428 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3536 event pairs, 67 based on Foata normal form. 1/782 useless extension candidates. Maximal degree in co-relation 7322. Up to 592 conditions per place. [2024-06-27 23:39:01,276 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 148 selfloop transitions, 68 changer transitions 0/219 dead transitions. [2024-06-27 23:39:01,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 219 transitions, 2953 flow [2024-06-27 23:39:01,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:39:01,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:39:01,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 121 transitions. [2024-06-27 23:39:01,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4074074074074074 [2024-06-27 23:39:01,277 INFO L175 Difference]: Start difference. First operand has 233 places, 210 transitions, 2351 flow. Second operand 9 states and 121 transitions. [2024-06-27 23:39:01,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 219 transitions, 2953 flow [2024-06-27 23:39:01,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 219 transitions, 2782 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-27 23:39:01,537 INFO L231 Difference]: Finished difference. Result has 234 places, 210 transitions, 2321 flow [2024-06-27 23:39:01,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2180, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2321, PETRI_PLACES=234, PETRI_TRANSITIONS=210} [2024-06-27 23:39:01,538 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 202 predicate places. [2024-06-27 23:39:01,538 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 210 transitions, 2321 flow [2024-06-27 23:39:01,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:01,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:01,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:01,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 23:39:01,539 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:39:01,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:01,539 INFO L85 PathProgramCache]: Analyzing trace with hash -849862410, now seen corresponding path program 9 times [2024-06-27 23:39:01,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:01,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812826357] [2024-06-27 23:39:01,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:01,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:01,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:02,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:02,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:02,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812826357] [2024-06-27 23:39:02,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812826357] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:02,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:02,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:39:02,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054203098] [2024-06-27 23:39:02,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:02,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:39:02,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:02,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:39:02,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:39:02,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:39:02,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 210 transitions, 2321 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:02,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:02,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:39:02,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:03,202 INFO L124 PetriNetUnfolderBase]: 437/779 cut-off events. [2024-06-27 23:39:03,203 INFO L125 PetriNetUnfolderBase]: For 118025/118025 co-relation queries the response was YES. [2024-06-27 23:39:03,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7350 conditions, 779 events. 437/779 cut-off events. For 118025/118025 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3540 event pairs, 61 based on Foata normal form. 1/779 useless extension candidates. Maximal degree in co-relation 7240. Up to 545 conditions per place. [2024-06-27 23:39:03,210 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 139 selfloop transitions, 78 changer transitions 0/220 dead transitions. [2024-06-27 23:39:03,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 220 transitions, 3081 flow [2024-06-27 23:39:03,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:39:03,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:39:03,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 122 transitions. [2024-06-27 23:39:03,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107744107744108 [2024-06-27 23:39:03,211 INFO L175 Difference]: Start difference. First operand has 234 places, 210 transitions, 2321 flow. Second operand 9 states and 122 transitions. [2024-06-27 23:39:03,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 220 transitions, 3081 flow [2024-06-27 23:39:03,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 220 transitions, 2924 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-27 23:39:03,475 INFO L231 Difference]: Finished difference. Result has 235 places, 210 transitions, 2325 flow [2024-06-27 23:39:03,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2164, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2325, PETRI_PLACES=235, PETRI_TRANSITIONS=210} [2024-06-27 23:39:03,476 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 203 predicate places. [2024-06-27 23:39:03,476 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 210 transitions, 2325 flow [2024-06-27 23:39:03,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:03,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:03,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:03,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 23:39:03,476 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:39:03,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:03,477 INFO L85 PathProgramCache]: Analyzing trace with hash -849625260, now seen corresponding path program 10 times [2024-06-27 23:39:03,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:03,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329755905] [2024-06-27 23:39:03,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:03,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:03,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:04,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:04,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:04,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329755905] [2024-06-27 23:39:04,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329755905] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:04,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:04,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:39:04,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678253847] [2024-06-27 23:39:04,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:04,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:39:04,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:04,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:39:04,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:39:04,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:39:04,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 210 transitions, 2325 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:04,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:04,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:39:04,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:04,984 INFO L124 PetriNetUnfolderBase]: 435/776 cut-off events. [2024-06-27 23:39:04,984 INFO L125 PetriNetUnfolderBase]: For 118156/118156 co-relation queries the response was YES. [2024-06-27 23:39:04,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7300 conditions, 776 events. 435/776 cut-off events. For 118156/118156 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3506 event pairs, 61 based on Foata normal form. 1/776 useless extension candidates. Maximal degree in co-relation 7189. Up to 543 conditions per place. [2024-06-27 23:39:04,991 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 141 selfloop transitions, 75 changer transitions 0/219 dead transitions. [2024-06-27 23:39:04,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 219 transitions, 2931 flow [2024-06-27 23:39:04,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:39:04,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:39:04,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 123 transitions. [2024-06-27 23:39:04,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41414141414141414 [2024-06-27 23:39:04,992 INFO L175 Difference]: Start difference. First operand has 235 places, 210 transitions, 2325 flow. Second operand 9 states and 123 transitions. [2024-06-27 23:39:04,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 219 transitions, 2931 flow [2024-06-27 23:39:05,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 219 transitions, 2762 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-27 23:39:05,238 INFO L231 Difference]: Finished difference. Result has 237 places, 210 transitions, 2311 flow [2024-06-27 23:39:05,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2156, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2311, PETRI_PLACES=237, PETRI_TRANSITIONS=210} [2024-06-27 23:39:05,238 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 205 predicate places. [2024-06-27 23:39:05,239 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 210 transitions, 2311 flow [2024-06-27 23:39:05,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:05,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:05,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:05,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 23:39:05,239 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:39:05,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:05,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1733009200, now seen corresponding path program 5 times [2024-06-27 23:39:05,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:05,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917825939] [2024-06-27 23:39:05,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:05,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:05,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:06,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:06,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:06,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917825939] [2024-06-27 23:39:06,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917825939] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:06,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:06,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:39:06,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226899262] [2024-06-27 23:39:06,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:06,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:39:06,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:06,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:39:06,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:39:06,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-06-27 23:39:06,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 210 transitions, 2311 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:06,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:06,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-06-27 23:39:06,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:06,775 INFO L124 PetriNetUnfolderBase]: 408/745 cut-off events. [2024-06-27 23:39:06,775 INFO L125 PetriNetUnfolderBase]: For 119165/119166 co-relation queries the response was YES. [2024-06-27 23:39:06,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7028 conditions, 745 events. 408/745 cut-off events. For 119165/119166 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3457 event pairs, 53 based on Foata normal form. 2/743 useless extension candidates. Maximal degree in co-relation 6916. Up to 572 conditions per place. [2024-06-27 23:39:06,782 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 146 selfloop transitions, 37 changer transitions 0/218 dead transitions. [2024-06-27 23:39:06,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 218 transitions, 2695 flow [2024-06-27 23:39:06,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:39:06,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:39:06,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 122 transitions. [2024-06-27 23:39:06,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4621212121212121 [2024-06-27 23:39:06,784 INFO L175 Difference]: Start difference. First operand has 237 places, 210 transitions, 2311 flow. Second operand 8 states and 122 transitions. [2024-06-27 23:39:06,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 218 transitions, 2695 flow [2024-06-27 23:39:07,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 218 transitions, 2514 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-27 23:39:07,051 INFO L231 Difference]: Finished difference. Result has 236 places, 210 transitions, 2209 flow [2024-06-27 23:39:07,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2130, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2209, PETRI_PLACES=236, PETRI_TRANSITIONS=210} [2024-06-27 23:39:07,051 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 204 predicate places. [2024-06-27 23:39:07,052 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 210 transitions, 2209 flow [2024-06-27 23:39:07,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:07,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:07,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:07,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 23:39:07,052 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:39:07,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:07,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1311570584, now seen corresponding path program 6 times [2024-06-27 23:39:07,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:07,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124516099] [2024-06-27 23:39:07,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:07,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:07,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:08,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:08,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:08,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124516099] [2024-06-27 23:39:08,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124516099] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:08,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:08,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:39:08,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779362835] [2024-06-27 23:39:08,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:08,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:39:08,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:08,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:39:08,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:39:08,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:39:08,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 210 transitions, 2209 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:08,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:08,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:39:08,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:08,623 INFO L124 PetriNetUnfolderBase]: 420/767 cut-off events. [2024-06-27 23:39:08,623 INFO L125 PetriNetUnfolderBase]: For 121613/121613 co-relation queries the response was YES. [2024-06-27 23:39:08,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7143 conditions, 767 events. 420/767 cut-off events. For 121613/121613 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3560 event pairs, 46 based on Foata normal form. 1/767 useless extension candidates. Maximal degree in co-relation 7031. Up to 602 conditions per place. [2024-06-27 23:39:08,630 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 169 selfloop transitions, 30 changer transitions 0/229 dead transitions. [2024-06-27 23:39:08,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 229 transitions, 2710 flow [2024-06-27 23:39:08,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:39:08,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:39:08,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-06-27 23:39:08,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41818181818181815 [2024-06-27 23:39:08,632 INFO L175 Difference]: Start difference. First operand has 236 places, 210 transitions, 2209 flow. Second operand 10 states and 138 transitions. [2024-06-27 23:39:08,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 229 transitions, 2710 flow [2024-06-27 23:39:08,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 229 transitions, 2593 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-27 23:39:08,904 INFO L231 Difference]: Finished difference. Result has 238 places, 214 transitions, 2222 flow [2024-06-27 23:39:08,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2092, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2222, PETRI_PLACES=238, PETRI_TRANSITIONS=214} [2024-06-27 23:39:08,904 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 206 predicate places. [2024-06-27 23:39:08,904 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 214 transitions, 2222 flow [2024-06-27 23:39:08,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:08,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:08,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:08,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 23:39:08,905 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:39:08,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:08,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1459621750, now seen corresponding path program 7 times [2024-06-27 23:39:08,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:08,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553536412] [2024-06-27 23:39:08,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:08,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:08,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:09,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:09,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:09,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553536412] [2024-06-27 23:39:09,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553536412] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:09,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:09,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:39:09,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467508367] [2024-06-27 23:39:09,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:09,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:39:09,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:09,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:39:09,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:39:09,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:39:09,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 214 transitions, 2222 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:09,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:09,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:39:09,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:10,209 INFO L124 PetriNetUnfolderBase]: 427/782 cut-off events. [2024-06-27 23:39:10,209 INFO L125 PetriNetUnfolderBase]: For 125037/125037 co-relation queries the response was YES. [2024-06-27 23:39:10,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7247 conditions, 782 events. 427/782 cut-off events. For 125037/125037 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 3689 event pairs, 48 based on Foata normal form. 1/782 useless extension candidates. Maximal degree in co-relation 7133. Up to 612 conditions per place. [2024-06-27 23:39:10,216 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 169 selfloop transitions, 37 changer transitions 0/236 dead transitions. [2024-06-27 23:39:10,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 236 transitions, 2751 flow [2024-06-27 23:39:10,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:39:10,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:39:10,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 130 transitions. [2024-06-27 23:39:10,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4377104377104377 [2024-06-27 23:39:10,217 INFO L175 Difference]: Start difference. First operand has 238 places, 214 transitions, 2222 flow. Second operand 9 states and 130 transitions. [2024-06-27 23:39:10,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 236 transitions, 2751 flow [2024-06-27 23:39:10,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 236 transitions, 2663 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-27 23:39:10,478 INFO L231 Difference]: Finished difference. Result has 241 places, 218 transitions, 2286 flow [2024-06-27 23:39:10,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2138, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2286, PETRI_PLACES=241, PETRI_TRANSITIONS=218} [2024-06-27 23:39:10,479 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 209 predicate places. [2024-06-27 23:39:10,479 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 218 transitions, 2286 flow [2024-06-27 23:39:10,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:10,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:10,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:10,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 23:39:10,479 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:39:10,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:10,480 INFO L85 PathProgramCache]: Analyzing trace with hash 163427384, now seen corresponding path program 8 times [2024-06-27 23:39:10,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:10,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602568164] [2024-06-27 23:39:10,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:10,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:10,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:11,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:11,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:11,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602568164] [2024-06-27 23:39:11,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602568164] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:11,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:11,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:39:11,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102778375] [2024-06-27 23:39:11,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:11,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:39:11,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:11,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:39:11,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:39:11,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:39:11,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 218 transitions, 2286 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:11,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:11,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:39:11,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:11,910 INFO L124 PetriNetUnfolderBase]: 434/797 cut-off events. [2024-06-27 23:39:11,910 INFO L125 PetriNetUnfolderBase]: For 128348/128348 co-relation queries the response was YES. [2024-06-27 23:39:11,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7388 conditions, 797 events. 434/797 cut-off events. For 128348/128348 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 3819 event pairs, 48 based on Foata normal form. 1/797 useless extension candidates. Maximal degree in co-relation 7274. Up to 622 conditions per place. [2024-06-27 23:39:11,918 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 172 selfloop transitions, 37 changer transitions 0/239 dead transitions. [2024-06-27 23:39:11,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 239 transitions, 2823 flow [2024-06-27 23:39:11,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:39:11,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:39:11,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-06-27 23:39:11,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41818181818181815 [2024-06-27 23:39:11,919 INFO L175 Difference]: Start difference. First operand has 241 places, 218 transitions, 2286 flow. Second operand 10 states and 138 transitions. [2024-06-27 23:39:11,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 239 transitions, 2823 flow [2024-06-27 23:39:12,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 239 transitions, 2702 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-27 23:39:12,216 INFO L231 Difference]: Finished difference. Result has 244 places, 222 transitions, 2321 flow [2024-06-27 23:39:12,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2169, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2321, PETRI_PLACES=244, PETRI_TRANSITIONS=222} [2024-06-27 23:39:12,217 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 212 predicate places. [2024-06-27 23:39:12,217 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 222 transitions, 2321 flow [2024-06-27 23:39:12,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:12,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:12,217 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:12,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 23:39:12,218 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:39:12,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:12,218 INFO L85 PathProgramCache]: Analyzing trace with hash 163559444, now seen corresponding path program 9 times [2024-06-27 23:39:12,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:12,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419468408] [2024-06-27 23:39:12,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:12,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:12,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:13,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:13,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:13,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419468408] [2024-06-27 23:39:13,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419468408] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:13,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:13,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:39:13,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235307931] [2024-06-27 23:39:13,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:13,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:39:13,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:13,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:39:13,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:39:13,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:39:13,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 222 transitions, 2321 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:13,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:13,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:39:13,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:14,053 INFO L124 PetriNetUnfolderBase]: 436/802 cut-off events. [2024-06-27 23:39:14,053 INFO L125 PetriNetUnfolderBase]: For 131405/131405 co-relation queries the response was YES. [2024-06-27 23:39:14,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7425 conditions, 802 events. 436/802 cut-off events. For 131405/131405 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 3835 event pairs, 49 based on Foata normal form. 1/802 useless extension candidates. Maximal degree in co-relation 7310. Up to 618 conditions per place. [2024-06-27 23:39:14,060 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 168 selfloop transitions, 42 changer transitions 0/240 dead transitions. [2024-06-27 23:39:14,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 240 transitions, 2827 flow [2024-06-27 23:39:14,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:39:14,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:39:14,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-06-27 23:39:14,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41818181818181815 [2024-06-27 23:39:14,062 INFO L175 Difference]: Start difference. First operand has 244 places, 222 transitions, 2321 flow. Second operand 10 states and 138 transitions. [2024-06-27 23:39:14,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 240 transitions, 2827 flow [2024-06-27 23:39:14,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 240 transitions, 2731 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-27 23:39:14,342 INFO L231 Difference]: Finished difference. Result has 248 places, 224 transitions, 2362 flow [2024-06-27 23:39:14,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2225, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2362, PETRI_PLACES=248, PETRI_TRANSITIONS=224} [2024-06-27 23:39:14,342 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 216 predicate places. [2024-06-27 23:39:14,342 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 224 transitions, 2362 flow [2024-06-27 23:39:14,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:14,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:14,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:14,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 23:39:14,346 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:39:14,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:14,347 INFO L85 PathProgramCache]: Analyzing trace with hash 163577300, now seen corresponding path program 11 times [2024-06-27 23:39:14,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:14,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279776655] [2024-06-27 23:39:14,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:14,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:14,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:15,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:15,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:15,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279776655] [2024-06-27 23:39:15,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279776655] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:15,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:15,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:39:15,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420382895] [2024-06-27 23:39:15,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:15,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:39:15,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:15,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:39:15,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:39:15,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:39:15,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 224 transitions, 2362 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:15,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:15,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:39:15,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:15,736 INFO L124 PetriNetUnfolderBase]: 460/826 cut-off events. [2024-06-27 23:39:15,736 INFO L125 PetriNetUnfolderBase]: For 134004/134004 co-relation queries the response was YES. [2024-06-27 23:39:15,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7640 conditions, 826 events. 460/826 cut-off events. For 134004/134004 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 3886 event pairs, 54 based on Foata normal form. 1/823 useless extension candidates. Maximal degree in co-relation 7524. Up to 737 conditions per place. [2024-06-27 23:39:15,744 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 208 selfloop transitions, 31 changer transitions 0/242 dead transitions. [2024-06-27 23:39:15,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 242 transitions, 2918 flow [2024-06-27 23:39:15,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:39:15,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:39:15,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-27 23:39:15,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38181818181818183 [2024-06-27 23:39:15,745 INFO L175 Difference]: Start difference. First operand has 248 places, 224 transitions, 2362 flow. Second operand 10 states and 126 transitions. [2024-06-27 23:39:15,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 242 transitions, 2918 flow [2024-06-27 23:39:16,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 242 transitions, 2797 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-27 23:39:16,022 INFO L231 Difference]: Finished difference. Result has 250 places, 226 transitions, 2348 flow [2024-06-27 23:39:16,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2241, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2348, PETRI_PLACES=250, PETRI_TRANSITIONS=226} [2024-06-27 23:39:16,023 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 218 predicate places. [2024-06-27 23:39:16,023 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 226 transitions, 2348 flow [2024-06-27 23:39:16,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:16,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:16,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:16,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-27 23:39:16,024 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:39:16,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:16,024 INFO L85 PathProgramCache]: Analyzing trace with hash 377458836, now seen corresponding path program 10 times [2024-06-27 23:39:16,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:16,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490489136] [2024-06-27 23:39:16,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:16,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:16,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:17,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:17,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:17,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490489136] [2024-06-27 23:39:17,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490489136] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:17,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:17,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:39:17,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880583262] [2024-06-27 23:39:17,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:17,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:39:17,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:17,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:39:17,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:39:17,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:39:17,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 226 transitions, 2348 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:17,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:17,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:39:17,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:17,590 INFO L124 PetriNetUnfolderBase]: 438/805 cut-off events. [2024-06-27 23:39:17,590 INFO L125 PetriNetUnfolderBase]: For 133895/133895 co-relation queries the response was YES. [2024-06-27 23:39:17,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7395 conditions, 805 events. 438/805 cut-off events. For 133895/133895 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 3861 event pairs, 52 based on Foata normal form. 1/805 useless extension candidates. Maximal degree in co-relation 7278. Up to 627 conditions per place. [2024-06-27 23:39:17,597 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 177 selfloop transitions, 34 changer transitions 0/242 dead transitions. [2024-06-27 23:39:17,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 242 transitions, 2814 flow [2024-06-27 23:39:17,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:39:17,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:39:17,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 130 transitions. [2024-06-27 23:39:17,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4377104377104377 [2024-06-27 23:39:17,598 INFO L175 Difference]: Start difference. First operand has 250 places, 226 transitions, 2348 flow. Second operand 9 states and 130 transitions. [2024-06-27 23:39:17,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 242 transitions, 2814 flow [2024-06-27 23:39:17,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 242 transitions, 2727 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-27 23:39:17,936 INFO L231 Difference]: Finished difference. Result has 251 places, 226 transitions, 2334 flow [2024-06-27 23:39:17,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2261, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2334, PETRI_PLACES=251, PETRI_TRANSITIONS=226} [2024-06-27 23:39:17,937 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 219 predicate places. [2024-06-27 23:39:17,937 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 226 transitions, 2334 flow [2024-06-27 23:39:17,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:17,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:17,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:17,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-27 23:39:17,938 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:39:17,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:17,938 INFO L85 PathProgramCache]: Analyzing trace with hash 239079672, now seen corresponding path program 12 times [2024-06-27 23:39:17,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:17,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663491450] [2024-06-27 23:39:17,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:17,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:17,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:18,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:18,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:18,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663491450] [2024-06-27 23:39:18,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663491450] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:18,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:18,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:39:18,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713073190] [2024-06-27 23:39:18,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:18,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:39:18,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:18,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:39:18,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:39:18,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:39:18,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 226 transitions, 2334 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:18,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:18,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:39:18,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:19,369 INFO L124 PetriNetUnfolderBase]: 461/828 cut-off events. [2024-06-27 23:39:19,369 INFO L125 PetriNetUnfolderBase]: For 136704/136704 co-relation queries the response was YES. [2024-06-27 23:39:19,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7576 conditions, 828 events. 461/828 cut-off events. For 136704/136704 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 3894 event pairs, 55 based on Foata normal form. 1/825 useless extension candidates. Maximal degree in co-relation 7459. Up to 739 conditions per place. [2024-06-27 23:39:19,376 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 211 selfloop transitions, 29 changer transitions 0/243 dead transitions. [2024-06-27 23:39:19,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 243 transitions, 2894 flow [2024-06-27 23:39:19,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:39:19,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:39:19,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-27 23:39:19,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38181818181818183 [2024-06-27 23:39:19,378 INFO L175 Difference]: Start difference. First operand has 251 places, 226 transitions, 2334 flow. Second operand 10 states and 126 transitions. [2024-06-27 23:39:19,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 243 transitions, 2894 flow [2024-06-27 23:39:19,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 243 transitions, 2734 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-27 23:39:19,688 INFO L231 Difference]: Finished difference. Result has 254 places, 228 transitions, 2281 flow [2024-06-27 23:39:19,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2174, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2281, PETRI_PLACES=254, PETRI_TRANSITIONS=228} [2024-06-27 23:39:19,689 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 222 predicate places. [2024-06-27 23:39:19,689 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 228 transitions, 2281 flow [2024-06-27 23:39:19,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:19,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:19,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:19,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-27 23:39:19,689 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:39:19,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:19,690 INFO L85 PathProgramCache]: Analyzing trace with hash 377619726, now seen corresponding path program 11 times [2024-06-27 23:39:19,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:19,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116539197] [2024-06-27 23:39:19,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:19,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:19,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:20,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:20,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:20,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116539197] [2024-06-27 23:39:20,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116539197] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:20,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:20,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:39:20,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076948672] [2024-06-27 23:39:20,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:20,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:39:20,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:20,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:39:20,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:39:21,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:39:21,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 228 transitions, 2281 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:21,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:21,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:39:21,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:21,493 INFO L124 PetriNetUnfolderBase]: 443/816 cut-off events. [2024-06-27 23:39:21,493 INFO L125 PetriNetUnfolderBase]: For 140193/140193 co-relation queries the response was YES. [2024-06-27 23:39:21,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7471 conditions, 816 events. 443/816 cut-off events. For 140193/140193 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 3935 event pairs, 52 based on Foata normal form. 1/816 useless extension candidates. Maximal degree in co-relation 7352. Up to 629 conditions per place. [2024-06-27 23:39:21,501 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 175 selfloop transitions, 38 changer transitions 0/245 dead transitions. [2024-06-27 23:39:21,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 245 transitions, 2795 flow [2024-06-27 23:39:21,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:39:21,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:39:21,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 139 transitions. [2024-06-27 23:39:21,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4212121212121212 [2024-06-27 23:39:21,502 INFO L175 Difference]: Start difference. First operand has 254 places, 228 transitions, 2281 flow. Second operand 10 states and 139 transitions. [2024-06-27 23:39:21,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 245 transitions, 2795 flow [2024-06-27 23:39:21,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 245 transitions, 2710 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-27 23:39:21,841 INFO L231 Difference]: Finished difference. Result has 256 places, 230 transitions, 2329 flow [2024-06-27 23:39:21,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2196, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2329, PETRI_PLACES=256, PETRI_TRANSITIONS=230} [2024-06-27 23:39:21,841 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 224 predicate places. [2024-06-27 23:39:21,841 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 230 transitions, 2329 flow [2024-06-27 23:39:21,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:21,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:21,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:21,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-27 23:39:21,842 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:39:21,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:21,842 INFO L85 PathProgramCache]: Analyzing trace with hash 382624056, now seen corresponding path program 12 times [2024-06-27 23:39:21,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:21,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547204204] [2024-06-27 23:39:21,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:21,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:21,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:23,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:23,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:23,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547204204] [2024-06-27 23:39:23,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547204204] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:23,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:23,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:39:23,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261899725] [2024-06-27 23:39:23,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:23,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:39:23,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:23,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:39:23,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:39:23,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:39:23,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 230 transitions, 2329 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:23,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:23,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:39:23,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:23,661 INFO L124 PetriNetUnfolderBase]: 444/821 cut-off events. [2024-06-27 23:39:23,661 INFO L125 PetriNetUnfolderBase]: For 148375/148376 co-relation queries the response was YES. [2024-06-27 23:39:23,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7675 conditions, 821 events. 444/821 cut-off events. For 148375/148376 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 3998 event pairs, 49 based on Foata normal form. 1/819 useless extension candidates. Maximal degree in co-relation 7555. Up to 614 conditions per place. [2024-06-27 23:39:23,669 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 165 selfloop transitions, 49 changer transitions 0/246 dead transitions. [2024-06-27 23:39:23,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 246 transitions, 2845 flow [2024-06-27 23:39:23,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:39:23,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:39:23,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-06-27 23:39:23,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41818181818181815 [2024-06-27 23:39:23,671 INFO L175 Difference]: Start difference. First operand has 256 places, 230 transitions, 2329 flow. Second operand 10 states and 138 transitions. [2024-06-27 23:39:23,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 246 transitions, 2845 flow [2024-06-27 23:39:23,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 246 transitions, 2728 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-27 23:39:23,872 INFO L231 Difference]: Finished difference. Result has 258 places, 232 transitions, 2371 flow [2024-06-27 23:39:23,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2212, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2371, PETRI_PLACES=258, PETRI_TRANSITIONS=232} [2024-06-27 23:39:23,872 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 226 predicate places. [2024-06-27 23:39:23,873 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 232 transitions, 2371 flow [2024-06-27 23:39:23,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:23,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:23,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:23,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-27 23:39:23,873 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:39:23,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:23,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1315973930, now seen corresponding path program 11 times [2024-06-27 23:39:23,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:23,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912113601] [2024-06-27 23:39:23,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:23,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:23,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:25,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:25,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:25,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912113601] [2024-06-27 23:39:25,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912113601] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:25,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:25,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:39:25,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233440971] [2024-06-27 23:39:25,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:25,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:39:25,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:25,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:39:25,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:39:25,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:39:25,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 232 transitions, 2371 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:25,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:25,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:39:25,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:25,424 INFO L124 PetriNetUnfolderBase]: 470/850 cut-off events. [2024-06-27 23:39:25,424 INFO L125 PetriNetUnfolderBase]: For 146455/146455 co-relation queries the response was YES. [2024-06-27 23:39:25,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7813 conditions, 850 events. 470/850 cut-off events. For 146455/146455 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4043 event pairs, 53 based on Foata normal form. 1/850 useless extension candidates. Maximal degree in co-relation 7692. Up to 772 conditions per place. [2024-06-27 23:39:25,431 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 221 selfloop transitions, 23 changer transitions 0/247 dead transitions. [2024-06-27 23:39:25,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 247 transitions, 2927 flow [2024-06-27 23:39:25,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:39:25,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:39:25,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-27 23:39:25,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37272727272727274 [2024-06-27 23:39:25,433 INFO L175 Difference]: Start difference. First operand has 258 places, 232 transitions, 2371 flow. Second operand 10 states and 123 transitions. [2024-06-27 23:39:25,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 247 transitions, 2927 flow [2024-06-27 23:39:25,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 247 transitions, 2784 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-27 23:39:25,815 INFO L231 Difference]: Finished difference. Result has 260 places, 234 transitions, 2317 flow [2024-06-27 23:39:25,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2228, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2317, PETRI_PLACES=260, PETRI_TRANSITIONS=234} [2024-06-27 23:39:25,815 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 228 predicate places. [2024-06-27 23:39:25,816 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 234 transitions, 2317 flow [2024-06-27 23:39:25,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:25,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:25,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:25,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-27 23:39:25,816 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:39:25,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:25,817 INFO L85 PathProgramCache]: Analyzing trace with hash 366543860, now seen corresponding path program 12 times [2024-06-27 23:39:25,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:25,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421686132] [2024-06-27 23:39:25,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:25,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:25,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:26,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:26,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:26,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421686132] [2024-06-27 23:39:26,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421686132] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:26,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:26,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:39:26,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324076580] [2024-06-27 23:39:26,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:26,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:39:26,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:26,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:39:26,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:39:26,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:39:26,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 234 transitions, 2317 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:26,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:26,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:39:26,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:27,235 INFO L124 PetriNetUnfolderBase]: 473/855 cut-off events. [2024-06-27 23:39:27,235 INFO L125 PetriNetUnfolderBase]: For 149487/149487 co-relation queries the response was YES. [2024-06-27 23:39:27,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7801 conditions, 855 events. 473/855 cut-off events. For 149487/149487 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4077 event pairs, 59 based on Foata normal form. 1/855 useless extension candidates. Maximal degree in co-relation 7679. Up to 777 conditions per place. [2024-06-27 23:39:27,243 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 223 selfloop transitions, 24 changer transitions 0/250 dead transitions. [2024-06-27 23:39:27,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 250 transitions, 2885 flow [2024-06-27 23:39:27,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:39:27,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:39:27,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-27 23:39:27,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37272727272727274 [2024-06-27 23:39:27,244 INFO L175 Difference]: Start difference. First operand has 260 places, 234 transitions, 2317 flow. Second operand 10 states and 123 transitions. [2024-06-27 23:39:27,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 250 transitions, 2885 flow [2024-06-27 23:39:27,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 250 transitions, 2820 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-27 23:39:27,624 INFO L231 Difference]: Finished difference. Result has 262 places, 236 transitions, 2347 flow [2024-06-27 23:39:27,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2252, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2347, PETRI_PLACES=262, PETRI_TRANSITIONS=236} [2024-06-27 23:39:27,625 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 230 predicate places. [2024-06-27 23:39:27,625 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 236 transitions, 2347 flow [2024-06-27 23:39:27,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:27,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:27,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:27,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-27 23:39:27,625 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:39:27,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:27,626 INFO L85 PathProgramCache]: Analyzing trace with hash 383189682, now seen corresponding path program 13 times [2024-06-27 23:39:27,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:27,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767404548] [2024-06-27 23:39:27,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:27,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:27,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:28,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:28,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:28,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767404548] [2024-06-27 23:39:28,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767404548] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:28,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:28,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:39:28,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397041340] [2024-06-27 23:39:28,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:28,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:39:28,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:28,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:39:28,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:39:28,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:39:28,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 236 transitions, 2347 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:28,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:28,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:39:28,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:28,989 INFO L124 PetriNetUnfolderBase]: 481/864 cut-off events. [2024-06-27 23:39:28,990 INFO L125 PetriNetUnfolderBase]: For 157163/157163 co-relation queries the response was YES. [2024-06-27 23:39:28,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8040 conditions, 864 events. 481/864 cut-off events. For 157163/157163 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4105 event pairs, 51 based on Foata normal form. 1/859 useless extension candidates. Maximal degree in co-relation 7917. Up to 750 conditions per place. [2024-06-27 23:39:28,998 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 212 selfloop transitions, 40 changer transitions 0/255 dead transitions. [2024-06-27 23:39:28,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 255 transitions, 3157 flow [2024-06-27 23:39:28,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:39:28,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:39:28,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 121 transitions. [2024-06-27 23:39:28,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4074074074074074 [2024-06-27 23:39:28,999 INFO L175 Difference]: Start difference. First operand has 262 places, 236 transitions, 2347 flow. Second operand 9 states and 121 transitions. [2024-06-27 23:39:28,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 255 transitions, 3157 flow [2024-06-27 23:39:29,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 255 transitions, 3086 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-27 23:39:29,414 INFO L231 Difference]: Finished difference. Result has 263 places, 240 transitions, 2453 flow [2024-06-27 23:39:29,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2276, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2453, PETRI_PLACES=263, PETRI_TRANSITIONS=240} [2024-06-27 23:39:29,414 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 231 predicate places. [2024-06-27 23:39:29,415 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 240 transitions, 2453 flow [2024-06-27 23:39:29,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:29,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:29,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:29,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-27 23:39:29,415 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:39:29,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:29,415 INFO L85 PathProgramCache]: Analyzing trace with hash -104458608, now seen corresponding path program 14 times [2024-06-27 23:39:29,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:29,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040034705] [2024-06-27 23:39:29,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:29,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:29,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:30,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:30,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:30,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040034705] [2024-06-27 23:39:30,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040034705] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:30,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:30,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:39:30,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515921348] [2024-06-27 23:39:30,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:30,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:39:30,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:30,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:39:30,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:39:30,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:39:30,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 240 transitions, 2453 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:30,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:30,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:39:30,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:30,781 INFO L124 PetriNetUnfolderBase]: 479/860 cut-off events. [2024-06-27 23:39:30,782 INFO L125 PetriNetUnfolderBase]: For 156461/156461 co-relation queries the response was YES. [2024-06-27 23:39:30,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7981 conditions, 860 events. 479/860 cut-off events. For 156461/156461 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4076 event pairs, 51 based on Foata normal form. 1/855 useless extension candidates. Maximal degree in co-relation 7858. Up to 748 conditions per place. [2024-06-27 23:39:30,790 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 213 selfloop transitions, 38 changer transitions 0/254 dead transitions. [2024-06-27 23:39:30,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 254 transitions, 2991 flow [2024-06-27 23:39:30,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:39:30,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:39:30,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 121 transitions. [2024-06-27 23:39:30,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4074074074074074 [2024-06-27 23:39:30,791 INFO L175 Difference]: Start difference. First operand has 263 places, 240 transitions, 2453 flow. Second operand 9 states and 121 transitions. [2024-06-27 23:39:30,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 254 transitions, 2991 flow [2024-06-27 23:39:31,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 254 transitions, 2893 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-06-27 23:39:31,167 INFO L231 Difference]: Finished difference. Result has 267 places, 240 transitions, 2436 flow [2024-06-27 23:39:31,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2355, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2436, PETRI_PLACES=267, PETRI_TRANSITIONS=240} [2024-06-27 23:39:31,167 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 235 predicate places. [2024-06-27 23:39:31,167 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 240 transitions, 2436 flow [2024-06-27 23:39:31,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:31,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:31,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:31,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-27 23:39:31,170 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:39:31,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:31,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1320622318, now seen corresponding path program 15 times [2024-06-27 23:39:31,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:31,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493853191] [2024-06-27 23:39:31,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:31,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:31,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:32,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:32,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:32,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493853191] [2024-06-27 23:39:32,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493853191] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:32,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:32,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:39:32,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716127529] [2024-06-27 23:39:32,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:32,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:39:32,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:32,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:39:32,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:39:32,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:39:32,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 240 transitions, 2436 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:32,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:32,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:39:32,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:32,846 INFO L124 PetriNetUnfolderBase]: 482/870 cut-off events. [2024-06-27 23:39:32,846 INFO L125 PetriNetUnfolderBase]: For 159729/159729 co-relation queries the response was YES. [2024-06-27 23:39:32,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8081 conditions, 870 events. 482/870 cut-off events. For 159729/159729 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4156 event pairs, 49 based on Foata normal form. 1/870 useless extension candidates. Maximal degree in co-relation 7956. Up to 774 conditions per place. [2024-06-27 23:39:32,855 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 225 selfloop transitions, 28 changer transitions 0/256 dead transitions. [2024-06-27 23:39:32,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 256 transitions, 3028 flow [2024-06-27 23:39:32,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:39:32,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:39:32,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-27 23:39:32,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38181818181818183 [2024-06-27 23:39:32,856 INFO L175 Difference]: Start difference. First operand has 267 places, 240 transitions, 2436 flow. Second operand 10 states and 126 transitions. [2024-06-27 23:39:32,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 256 transitions, 3028 flow [2024-06-27 23:39:33,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 256 transitions, 2933 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-27 23:39:33,266 INFO L231 Difference]: Finished difference. Result has 269 places, 242 transitions, 2454 flow [2024-06-27 23:39:33,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2341, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2454, PETRI_PLACES=269, PETRI_TRANSITIONS=242} [2024-06-27 23:39:33,267 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 237 predicate places. [2024-06-27 23:39:33,267 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 242 transitions, 2454 flow [2024-06-27 23:39:33,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:33,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:33,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:33,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-27 23:39:33,267 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:39:33,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:33,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1320622504, now seen corresponding path program 13 times [2024-06-27 23:39:33,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:33,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058261718] [2024-06-27 23:39:33,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:33,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:33,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:34,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:34,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:34,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058261718] [2024-06-27 23:39:34,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058261718] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:34,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:34,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:39:34,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344380258] [2024-06-27 23:39:34,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:34,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:39:34,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:34,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:39:34,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:39:34,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:39:34,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 242 transitions, 2454 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:34,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:34,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:39:34,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:35,028 INFO L124 PetriNetUnfolderBase]: 463/855 cut-off events. [2024-06-27 23:39:35,028 INFO L125 PetriNetUnfolderBase]: For 164109/164109 co-relation queries the response was YES. [2024-06-27 23:39:35,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8021 conditions, 855 events. 463/855 cut-off events. For 164109/164109 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4173 event pairs, 50 based on Foata normal form. 1/855 useless extension candidates. Maximal degree in co-relation 7894. Up to 656 conditions per place. [2024-06-27 23:39:35,037 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 186 selfloop transitions, 37 changer transitions 0/258 dead transitions. [2024-06-27 23:39:35,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 258 transitions, 2994 flow [2024-06-27 23:39:35,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:39:35,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:39:35,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 139 transitions. [2024-06-27 23:39:35,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4212121212121212 [2024-06-27 23:39:35,038 INFO L175 Difference]: Start difference. First operand has 269 places, 242 transitions, 2454 flow. Second operand 10 states and 139 transitions. [2024-06-27 23:39:35,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 258 transitions, 2994 flow [2024-06-27 23:39:35,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 258 transitions, 2903 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-27 23:39:35,440 INFO L231 Difference]: Finished difference. Result has 271 places, 244 transitions, 2502 flow [2024-06-27 23:39:35,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2363, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2502, PETRI_PLACES=271, PETRI_TRANSITIONS=244} [2024-06-27 23:39:35,441 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 239 predicate places. [2024-06-27 23:39:35,441 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 244 transitions, 2502 flow [2024-06-27 23:39:35,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:35,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:35,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:35,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-27 23:39:35,442 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:39:35,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:35,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1315980874, now seen corresponding path program 14 times [2024-06-27 23:39:35,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:35,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771991779] [2024-06-27 23:39:35,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:35,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:35,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:36,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:36,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:36,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771991779] [2024-06-27 23:39:36,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771991779] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:36,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:36,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:39:36,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503030515] [2024-06-27 23:39:36,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:36,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:39:36,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:36,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:39:36,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:39:36,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:39:36,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 244 transitions, 2502 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:36,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:36,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:39:36,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:37,437 INFO L124 PetriNetUnfolderBase]: 466/862 cut-off events. [2024-06-27 23:39:37,438 INFO L125 PetriNetUnfolderBase]: For 167991/167991 co-relation queries the response was YES. [2024-06-27 23:39:37,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8141 conditions, 862 events. 466/862 cut-off events. For 167991/167991 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4222 event pairs, 50 based on Foata normal form. 1/862 useless extension candidates. Maximal degree in co-relation 8013. Up to 652 conditions per place. [2024-06-27 23:39:37,446 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 183 selfloop transitions, 41 changer transitions 0/259 dead transitions. [2024-06-27 23:39:37,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 259 transitions, 3044 flow [2024-06-27 23:39:37,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:39:37,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:39:37,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 140 transitions. [2024-06-27 23:39:37,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-06-27 23:39:37,448 INFO L175 Difference]: Start difference. First operand has 271 places, 244 transitions, 2502 flow. Second operand 10 states and 140 transitions. [2024-06-27 23:39:37,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 259 transitions, 3044 flow [2024-06-27 23:39:37,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 259 transitions, 2921 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-27 23:39:37,928 INFO L231 Difference]: Finished difference. Result has 273 places, 246 transitions, 2530 flow [2024-06-27 23:39:37,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2379, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2530, PETRI_PLACES=273, PETRI_TRANSITIONS=246} [2024-06-27 23:39:37,928 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 241 predicate places. [2024-06-27 23:39:37,928 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 246 transitions, 2530 flow [2024-06-27 23:39:37,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:37,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:37,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:37,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-27 23:39:37,929 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:39:37,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:37,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1315980688, now seen corresponding path program 16 times [2024-06-27 23:39:37,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:37,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707965146] [2024-06-27 23:39:37,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:37,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:37,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:38,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:38,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:38,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707965146] [2024-06-27 23:39:38,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707965146] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:38,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:38,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:39:38,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666414621] [2024-06-27 23:39:38,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:38,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:39:38,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:38,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:39:38,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:39:39,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:39:39,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 246 transitions, 2530 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:39,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:39,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:39:39,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:39,427 INFO L124 PetriNetUnfolderBase]: 496/897 cut-off events. [2024-06-27 23:39:39,427 INFO L125 PetriNetUnfolderBase]: For 175775/175775 co-relation queries the response was YES. [2024-06-27 23:39:39,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8542 conditions, 897 events. 496/897 cut-off events. For 175775/175775 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4343 event pairs, 49 based on Foata normal form. 1/897 useless extension candidates. Maximal degree in co-relation 8413. Up to 781 conditions per place. [2024-06-27 23:39:39,436 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 226 selfloop transitions, 35 changer transitions 0/264 dead transitions. [2024-06-27 23:39:39,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 264 transitions, 3382 flow [2024-06-27 23:39:39,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:39:39,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:39:39,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-27 23:39:39,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-27 23:39:39,438 INFO L175 Difference]: Start difference. First operand has 273 places, 246 transitions, 2530 flow. Second operand 10 states and 130 transitions. [2024-06-27 23:39:39,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 264 transitions, 3382 flow [2024-06-27 23:39:39,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 264 transitions, 3247 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-27 23:39:39,925 INFO L231 Difference]: Finished difference. Result has 275 places, 250 transitions, 2578 flow [2024-06-27 23:39:39,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2395, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2578, PETRI_PLACES=275, PETRI_TRANSITIONS=250} [2024-06-27 23:39:39,926 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 243 predicate places. [2024-06-27 23:39:39,926 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 250 transitions, 2578 flow [2024-06-27 23:39:39,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:39,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:39,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:39,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-27 23:39:39,926 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:39:39,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:39,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1315974178, now seen corresponding path program 17 times [2024-06-27 23:39:39,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:39,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505606869] [2024-06-27 23:39:39,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:39,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:39,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:41,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:41,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:41,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505606869] [2024-06-27 23:39:41,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505606869] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:41,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:41,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:39:41,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585372037] [2024-06-27 23:39:41,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:41,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:39:41,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:41,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:39:41,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:39:41,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:39:41,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 250 transitions, 2578 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:41,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:41,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:39:41,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:41,489 INFO L124 PetriNetUnfolderBase]: 494/894 cut-off events. [2024-06-27 23:39:41,489 INFO L125 PetriNetUnfolderBase]: For 174374/174374 co-relation queries the response was YES. [2024-06-27 23:39:41,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8400 conditions, 894 events. 494/894 cut-off events. For 174374/174374 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4329 event pairs, 49 based on Foata normal form. 1/894 useless extension candidates. Maximal degree in co-relation 8270. Up to 779 conditions per place. [2024-06-27 23:39:41,500 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 224 selfloop transitions, 36 changer transitions 0/263 dead transitions. [2024-06-27 23:39:41,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 263 transitions, 3132 flow [2024-06-27 23:39:41,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:39:41,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:39:41,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-27 23:39:41,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3878787878787879 [2024-06-27 23:39:41,501 INFO L175 Difference]: Start difference. First operand has 275 places, 250 transitions, 2578 flow. Second operand 10 states and 128 transitions. [2024-06-27 23:39:41,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 263 transitions, 3132 flow [2024-06-27 23:39:41,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 263 transitions, 3010 flow, removed 42 selfloop flow, removed 6 redundant places. [2024-06-27 23:39:41,999 INFO L231 Difference]: Finished difference. Result has 279 places, 250 transitions, 2533 flow [2024-06-27 23:39:42,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2456, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2533, PETRI_PLACES=279, PETRI_TRANSITIONS=250} [2024-06-27 23:39:42,000 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 247 predicate places. [2024-06-27 23:39:42,000 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 250 transitions, 2533 flow [2024-06-27 23:39:42,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:42,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:42,001 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:42,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-27 23:39:42,001 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:39:42,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:42,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1143490798, now seen corresponding path program 18 times [2024-06-27 23:39:42,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:42,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520855157] [2024-06-27 23:39:42,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:42,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:42,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:43,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:43,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:43,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520855157] [2024-06-27 23:39:43,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520855157] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:43,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:43,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:39:43,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730157236] [2024-06-27 23:39:43,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:43,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:39:43,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:43,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:39:43,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:39:43,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:39:43,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 250 transitions, 2533 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:43,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:43,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:39:43,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:43,540 INFO L124 PetriNetUnfolderBase]: 497/899 cut-off events. [2024-06-27 23:39:43,541 INFO L125 PetriNetUnfolderBase]: For 177798/177798 co-relation queries the response was YES. [2024-06-27 23:39:43,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8475 conditions, 899 events. 497/899 cut-off events. For 177798/177798 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 4366 event pairs, 53 based on Foata normal form. 1/899 useless extension candidates. Maximal degree in co-relation 8343. Up to 730 conditions per place. [2024-06-27 23:39:43,550 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 205 selfloop transitions, 57 changer transitions 0/265 dead transitions. [2024-06-27 23:39:43,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 265 transitions, 3339 flow [2024-06-27 23:39:43,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:39:43,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:39:43,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-27 23:39:43,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-27 23:39:43,552 INFO L175 Difference]: Start difference. First operand has 279 places, 250 transitions, 2533 flow. Second operand 10 states and 130 transitions. [2024-06-27 23:39:43,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 265 transitions, 3339 flow [2024-06-27 23:39:44,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 265 transitions, 3264 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 23:39:44,115 INFO L231 Difference]: Finished difference. Result has 280 places, 252 transitions, 2633 flow [2024-06-27 23:39:44,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2458, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2633, PETRI_PLACES=280, PETRI_TRANSITIONS=252} [2024-06-27 23:39:44,115 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 248 predicate places. [2024-06-27 23:39:44,115 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 252 transitions, 2633 flow [2024-06-27 23:39:44,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:44,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:44,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:44,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-27 23:39:44,116 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:39:44,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:44,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1143490984, now seen corresponding path program 15 times [2024-06-27 23:39:44,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:44,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271856807] [2024-06-27 23:39:44,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:44,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:44,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:45,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:45,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:45,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271856807] [2024-06-27 23:39:45,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271856807] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:45,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:45,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:39:45,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126053644] [2024-06-27 23:39:45,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:45,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:39:45,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:45,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:39:45,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:39:45,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:39:45,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 252 transitions, 2633 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:45,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:45,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:39:45,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:45,994 INFO L124 PetriNetUnfolderBase]: 472/873 cut-off events. [2024-06-27 23:39:45,995 INFO L125 PetriNetUnfolderBase]: For 177371/177371 co-relation queries the response was YES. [2024-06-27 23:39:46,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8278 conditions, 873 events. 472/873 cut-off events. For 177371/177371 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 4314 event pairs, 55 based on Foata normal form. 1/873 useless extension candidates. Maximal degree in co-relation 8145. Up to 615 conditions per place. [2024-06-27 23:39:46,003 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 166 selfloop transitions, 62 changer transitions 0/266 dead transitions. [2024-06-27 23:39:46,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 266 transitions, 3183 flow [2024-06-27 23:39:46,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:39:46,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:39:46,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-06-27 23:39:46,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41818181818181815 [2024-06-27 23:39:46,004 INFO L175 Difference]: Start difference. First operand has 280 places, 252 transitions, 2633 flow. Second operand 10 states and 138 transitions. [2024-06-27 23:39:46,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 266 transitions, 3183 flow [2024-06-27 23:39:46,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 266 transitions, 2876 flow, removed 31 selfloop flow, removed 11 redundant places. [2024-06-27 23:39:46,469 INFO L231 Difference]: Finished difference. Result has 279 places, 254 transitions, 2523 flow [2024-06-27 23:39:46,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2326, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2523, PETRI_PLACES=279, PETRI_TRANSITIONS=254} [2024-06-27 23:39:46,470 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 247 predicate places. [2024-06-27 23:39:46,470 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 254 transitions, 2523 flow [2024-06-27 23:39:46,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:46,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:46,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:46,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-27 23:39:46,471 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:39:46,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:46,478 INFO L85 PathProgramCache]: Analyzing trace with hash 572481082, now seen corresponding path program 13 times [2024-06-27 23:39:46,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:46,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041256008] [2024-06-27 23:39:46,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:46,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:46,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:47,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:47,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:47,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041256008] [2024-06-27 23:39:47,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041256008] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:47,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:47,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:39:47,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854692849] [2024-06-27 23:39:47,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:47,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:39:47,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:47,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:39:47,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:39:47,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:39:47,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 254 transitions, 2523 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:47,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:47,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:39:47,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:48,000 INFO L124 PetriNetUnfolderBase]: 498/901 cut-off events. [2024-06-27 23:39:48,001 INFO L125 PetriNetUnfolderBase]: For 180075/180075 co-relation queries the response was YES. [2024-06-27 23:39:48,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8290 conditions, 901 events. 498/901 cut-off events. For 180075/180075 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 4406 event pairs, 55 based on Foata normal form. 1/901 useless extension candidates. Maximal degree in co-relation 8159. Up to 783 conditions per place. [2024-06-27 23:39:48,017 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 229 selfloop transitions, 37 changer transitions 0/269 dead transitions. [2024-06-27 23:39:48,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 269 transitions, 3327 flow [2024-06-27 23:39:48,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:39:48,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:39:48,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-27 23:39:48,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3878787878787879 [2024-06-27 23:39:48,019 INFO L175 Difference]: Start difference. First operand has 279 places, 254 transitions, 2523 flow. Second operand 10 states and 128 transitions. [2024-06-27 23:39:48,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 269 transitions, 3327 flow [2024-06-27 23:39:48,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 269 transitions, 3146 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-27 23:39:48,455 INFO L231 Difference]: Finished difference. Result has 281 places, 256 transitions, 2463 flow [2024-06-27 23:39:48,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2342, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2463, PETRI_PLACES=281, PETRI_TRANSITIONS=256} [2024-06-27 23:39:48,458 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 249 predicate places. [2024-06-27 23:39:48,458 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 256 transitions, 2463 flow [2024-06-27 23:39:48,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:48,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:48,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:48,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-27 23:39:48,458 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:39:48,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:48,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1143245030, now seen corresponding path program 14 times [2024-06-27 23:39:48,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:48,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839600626] [2024-06-27 23:39:48,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:48,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:48,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:49,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:49,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:49,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839600626] [2024-06-27 23:39:49,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839600626] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:49,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:49,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:39:49,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857113477] [2024-06-27 23:39:49,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:49,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:39:49,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:49,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:39:49,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:39:49,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:39:49,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 256 transitions, 2463 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:49,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:49,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:39:49,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:49,978 INFO L124 PetriNetUnfolderBase]: 501/906 cut-off events. [2024-06-27 23:39:49,978 INFO L125 PetriNetUnfolderBase]: For 183267/183267 co-relation queries the response was YES. [2024-06-27 23:39:49,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8273 conditions, 906 events. 501/906 cut-off events. For 183267/183267 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 4421 event pairs, 55 based on Foata normal form. 1/906 useless extension candidates. Maximal degree in co-relation 8141. Up to 787 conditions per place. [2024-06-27 23:39:49,988 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 224 selfloop transitions, 44 changer transitions 0/271 dead transitions. [2024-06-27 23:39:49,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 271 transitions, 3277 flow [2024-06-27 23:39:49,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:39:49,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:39:49,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-27 23:39:49,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38181818181818183 [2024-06-27 23:39:49,989 INFO L175 Difference]: Start difference. First operand has 281 places, 256 transitions, 2463 flow. Second operand 10 states and 126 transitions. [2024-06-27 23:39:49,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 271 transitions, 3277 flow [2024-06-27 23:39:50,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 271 transitions, 3105 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-27 23:39:50,472 INFO L231 Difference]: Finished difference. Result has 282 places, 258 transitions, 2430 flow [2024-06-27 23:39:50,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2301, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2430, PETRI_PLACES=282, PETRI_TRANSITIONS=258} [2024-06-27 23:39:50,472 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 250 predicate places. [2024-06-27 23:39:50,473 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 258 transitions, 2430 flow [2024-06-27 23:39:50,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:50,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:50,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:50,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-27 23:39:50,473 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:39:50,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:50,473 INFO L85 PathProgramCache]: Analyzing trace with hash 572480834, now seen corresponding path program 19 times [2024-06-27 23:39:50,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:50,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179825774] [2024-06-27 23:39:50,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:50,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:50,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:51,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:51,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:51,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179825774] [2024-06-27 23:39:51,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179825774] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:51,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:51,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:39:51,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831974629] [2024-06-27 23:39:51,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:51,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:39:51,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:51,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:39:51,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:39:51,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:39:51,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 258 transitions, 2430 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:51,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:51,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:39:51,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:52,024 INFO L124 PetriNetUnfolderBase]: 504/911 cut-off events. [2024-06-27 23:39:52,024 INFO L125 PetriNetUnfolderBase]: For 186595/186595 co-relation queries the response was YES. [2024-06-27 23:39:52,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8271 conditions, 911 events. 504/911 cut-off events. For 186595/186595 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 4461 event pairs, 53 based on Foata normal form. 1/911 useless extension candidates. Maximal degree in co-relation 8139. Up to 741 conditions per place. [2024-06-27 23:39:52,033 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 212 selfloop transitions, 58 changer transitions 0/273 dead transitions. [2024-06-27 23:39:52,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 273 transitions, 3244 flow [2024-06-27 23:39:52,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:39:52,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:39:52,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-27 23:39:52,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396969696969697 [2024-06-27 23:39:52,035 INFO L175 Difference]: Start difference. First operand has 282 places, 258 transitions, 2430 flow. Second operand 10 states and 131 transitions. [2024-06-27 23:39:52,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 273 transitions, 3244 flow [2024-06-27 23:39:52,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 273 transitions, 3052 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-27 23:39:52,498 INFO L231 Difference]: Finished difference. Result has 283 places, 260 transitions, 2399 flow [2024-06-27 23:39:52,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2238, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2399, PETRI_PLACES=283, PETRI_TRANSITIONS=260} [2024-06-27 23:39:52,499 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 251 predicate places. [2024-06-27 23:39:52,499 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 260 transitions, 2399 flow [2024-06-27 23:39:52,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:52,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:52,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:52,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-27 23:39:52,499 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:39:52,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:52,500 INFO L85 PathProgramCache]: Analyzing trace with hash 572711474, now seen corresponding path program 20 times [2024-06-27 23:39:52,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:52,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778576751] [2024-06-27 23:39:52,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:52,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:52,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:53,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:53,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:53,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778576751] [2024-06-27 23:39:53,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778576751] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:53,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:53,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:39:53,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721238394] [2024-06-27 23:39:53,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:53,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:39:53,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:53,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:39:53,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:39:53,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:39:53,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 260 transitions, 2399 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:53,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:53,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:39:53,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:54,047 INFO L124 PetriNetUnfolderBase]: 502/908 cut-off events. [2024-06-27 23:39:54,048 INFO L125 PetriNetUnfolderBase]: For 185029/185029 co-relation queries the response was YES. [2024-06-27 23:39:54,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8151 conditions, 908 events. 502/908 cut-off events. For 185029/185029 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 4450 event pairs, 53 based on Foata normal form. 1/908 useless extension candidates. Maximal degree in co-relation 8018. Up to 739 conditions per place. [2024-06-27 23:39:54,057 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 204 selfloop transitions, 65 changer transitions 0/272 dead transitions. [2024-06-27 23:39:54,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 272 transitions, 2967 flow [2024-06-27 23:39:54,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:39:54,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:39:54,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-27 23:39:54,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3878787878787879 [2024-06-27 23:39:54,072 INFO L175 Difference]: Start difference. First operand has 283 places, 260 transitions, 2399 flow. Second operand 10 states and 128 transitions. [2024-06-27 23:39:54,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 272 transitions, 2967 flow [2024-06-27 23:39:54,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 272 transitions, 2802 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-27 23:39:54,525 INFO L231 Difference]: Finished difference. Result has 286 places, 260 transitions, 2369 flow [2024-06-27 23:39:54,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2234, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2369, PETRI_PLACES=286, PETRI_TRANSITIONS=260} [2024-06-27 23:39:54,525 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 254 predicate places. [2024-06-27 23:39:54,525 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 260 transitions, 2369 flow [2024-06-27 23:39:54,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:54,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:54,526 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:54,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-27 23:39:54,526 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:39:54,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:54,526 INFO L85 PathProgramCache]: Analyzing trace with hash 572711722, now seen corresponding path program 15 times [2024-06-27 23:39:54,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:54,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550080866] [2024-06-27 23:39:54,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:54,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:54,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:55,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:55,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:55,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550080866] [2024-06-27 23:39:55,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550080866] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:55,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:55,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:39:55,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490467506] [2024-06-27 23:39:55,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:55,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:39:55,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:55,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:39:55,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:39:55,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:39:55,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 260 transitions, 2369 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:55,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:55,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:39:55,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:55,983 INFO L124 PetriNetUnfolderBase]: 500/905 cut-off events. [2024-06-27 23:39:55,984 INFO L125 PetriNetUnfolderBase]: For 183072/183072 co-relation queries the response was YES. [2024-06-27 23:39:55,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8028 conditions, 905 events. 500/905 cut-off events. For 183072/183072 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 4433 event pairs, 55 based on Foata normal form. 1/905 useless extension candidates. Maximal degree in co-relation 7894. Up to 787 conditions per place. [2024-06-27 23:39:55,993 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 228 selfloop transitions, 41 changer transitions 0/272 dead transitions. [2024-06-27 23:39:55,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 272 transitions, 2937 flow [2024-06-27 23:39:55,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:39:55,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:39:55,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-27 23:39:55,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38181818181818183 [2024-06-27 23:39:55,994 INFO L175 Difference]: Start difference. First operand has 286 places, 260 transitions, 2369 flow. Second operand 10 states and 126 transitions. [2024-06-27 23:39:55,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 272 transitions, 2937 flow [2024-06-27 23:39:56,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 272 transitions, 2697 flow, removed 12 selfloop flow, removed 11 redundant places. [2024-06-27 23:39:56,518 INFO L231 Difference]: Finished difference. Result has 285 places, 260 transitions, 2216 flow [2024-06-27 23:39:56,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2129, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2216, PETRI_PLACES=285, PETRI_TRANSITIONS=260} [2024-06-27 23:39:56,519 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 253 predicate places. [2024-06-27 23:39:56,519 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 260 transitions, 2216 flow [2024-06-27 23:39:56,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:56,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:56,519 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:56,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-27 23:39:56,519 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:39:56,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:56,520 INFO L85 PathProgramCache]: Analyzing trace with hash -554028046, now seen corresponding path program 1 times [2024-06-27 23:39:56,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:56,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988120375] [2024-06-27 23:39:56,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:56,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:56,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:39:58,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:39:58,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:39:58,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988120375] [2024-06-27 23:39:58,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988120375] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:39:58,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:39:58,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:39:58,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228746750] [2024-06-27 23:39:58,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:39:58,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:39:58,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:39:58,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:39:58,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:39:58,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:39:58,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 260 transitions, 2216 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:58,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:39:58,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:39:58,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:39:58,933 INFO L124 PetriNetUnfolderBase]: 467/863 cut-off events. [2024-06-27 23:39:58,934 INFO L125 PetriNetUnfolderBase]: For 184550/184551 co-relation queries the response was YES. [2024-06-27 23:39:58,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7480 conditions, 863 events. 467/863 cut-off events. For 184550/184551 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 4307 event pairs, 87 based on Foata normal form. 3/857 useless extension candidates. Maximal degree in co-relation 7345. Up to 725 conditions per place. [2024-06-27 23:39:58,942 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 214 selfloop transitions, 17 changer transitions 0/270 dead transitions. [2024-06-27 23:39:58,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 270 transitions, 2700 flow [2024-06-27 23:39:58,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:39:58,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:39:58,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-27 23:39:58,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36639118457300274 [2024-06-27 23:39:58,943 INFO L175 Difference]: Start difference. First operand has 285 places, 260 transitions, 2216 flow. Second operand 11 states and 133 transitions. [2024-06-27 23:39:58,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 270 transitions, 2700 flow [2024-06-27 23:39:59,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 270 transitions, 2596 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 23:39:59,373 INFO L231 Difference]: Finished difference. Result has 286 places, 260 transitions, 2150 flow [2024-06-27 23:39:59,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2112, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2150, PETRI_PLACES=286, PETRI_TRANSITIONS=260} [2024-06-27 23:39:59,373 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 254 predicate places. [2024-06-27 23:39:59,373 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 260 transitions, 2150 flow [2024-06-27 23:39:59,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:39:59,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:39:59,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:39:59,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-27 23:39:59,374 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:39:59,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:39:59,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1227933754, now seen corresponding path program 1 times [2024-06-27 23:39:59,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:39:59,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528576819] [2024-06-27 23:39:59,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:39:59,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:39:59,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:00,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:00,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:00,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528576819] [2024-06-27 23:40:00,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528576819] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:00,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:00,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:40:00,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49156118] [2024-06-27 23:40:00,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:00,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:40:00,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:00,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:40:00,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:40:00,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:40:00,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 260 transitions, 2150 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:00,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:00,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:40:00,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:01,060 INFO L124 PetriNetUnfolderBase]: 500/907 cut-off events. [2024-06-27 23:40:01,060 INFO L125 PetriNetUnfolderBase]: For 179070/179070 co-relation queries the response was YES. [2024-06-27 23:40:01,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7742 conditions, 907 events. 500/907 cut-off events. For 179070/179070 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 4458 event pairs, 60 based on Foata normal form. 1/907 useless extension candidates. Maximal degree in co-relation 7606. Up to 779 conditions per place. [2024-06-27 23:40:01,068 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 236 selfloop transitions, 36 changer transitions 0/275 dead transitions. [2024-06-27 23:40:01,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 275 transitions, 2772 flow [2024-06-27 23:40:01,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:40:01,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:40:01,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-27 23:40:01,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3746556473829201 [2024-06-27 23:40:01,069 INFO L175 Difference]: Start difference. First operand has 286 places, 260 transitions, 2150 flow. Second operand 11 states and 136 transitions. [2024-06-27 23:40:01,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 275 transitions, 2772 flow [2024-06-27 23:40:01,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 275 transitions, 2716 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-27 23:40:01,505 INFO L231 Difference]: Finished difference. Result has 286 places, 262 transitions, 2217 flow [2024-06-27 23:40:01,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2094, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2217, PETRI_PLACES=286, PETRI_TRANSITIONS=262} [2024-06-27 23:40:01,505 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 254 predicate places. [2024-06-27 23:40:01,505 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 262 transitions, 2217 flow [2024-06-27 23:40:01,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:01,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:01,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:01,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-27 23:40:01,506 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:40:01,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:01,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1231658621, now seen corresponding path program 1 times [2024-06-27 23:40:01,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:01,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432324190] [2024-06-27 23:40:01,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:01,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:01,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:02,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:02,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:02,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432324190] [2024-06-27 23:40:02,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432324190] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:02,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:02,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:40:02,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748595803] [2024-06-27 23:40:02,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:02,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:40:02,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:02,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:40:02,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:40:02,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:40:02,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 262 transitions, 2217 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:02,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:02,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:40:02,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:03,184 INFO L124 PetriNetUnfolderBase]: 503/912 cut-off events. [2024-06-27 23:40:03,184 INFO L125 PetriNetUnfolderBase]: For 182454/182454 co-relation queries the response was YES. [2024-06-27 23:40:03,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7854 conditions, 912 events. 503/912 cut-off events. For 182454/182454 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 4498 event pairs, 53 based on Foata normal form. 1/912 useless extension candidates. Maximal degree in co-relation 7719. Up to 807 conditions per place. [2024-06-27 23:40:03,194 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 243 selfloop transitions, 30 changer transitions 0/276 dead transitions. [2024-06-27 23:40:03,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 276 transitions, 2823 flow [2024-06-27 23:40:03,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:40:03,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:40:03,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-27 23:40:03,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38181818181818183 [2024-06-27 23:40:03,195 INFO L175 Difference]: Start difference. First operand has 286 places, 262 transitions, 2217 flow. Second operand 10 states and 126 transitions. [2024-06-27 23:40:03,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 276 transitions, 2823 flow [2024-06-27 23:40:03,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 276 transitions, 2716 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-27 23:40:03,615 INFO L231 Difference]: Finished difference. Result has 287 places, 264 transitions, 2207 flow [2024-06-27 23:40:03,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2110, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2207, PETRI_PLACES=287, PETRI_TRANSITIONS=264} [2024-06-27 23:40:03,616 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 255 predicate places. [2024-06-27 23:40:03,616 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 264 transitions, 2207 flow [2024-06-27 23:40:03,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:03,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:03,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:03,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-27 23:40:03,617 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:40:03,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:03,617 INFO L85 PathProgramCache]: Analyzing trace with hash 163015622, now seen corresponding path program 2 times [2024-06-27 23:40:03,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:03,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114598121] [2024-06-27 23:40:03,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:03,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:03,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:05,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:05,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:05,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114598121] [2024-06-27 23:40:05,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114598121] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:05,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:05,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:40:05,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200312820] [2024-06-27 23:40:05,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:05,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:40:05,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:05,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:40:05,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:40:05,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:40:05,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 264 transitions, 2207 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:05,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:05,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:40:05,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:05,751 INFO L124 PetriNetUnfolderBase]: 511/927 cut-off events. [2024-06-27 23:40:05,752 INFO L125 PetriNetUnfolderBase]: For 191812/191812 co-relation queries the response was YES. [2024-06-27 23:40:05,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8109 conditions, 927 events. 511/927 cut-off events. For 191812/191812 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 4576 event pairs, 64 based on Foata normal form. 1/927 useless extension candidates. Maximal degree in co-relation 7973. Up to 781 conditions per place. [2024-06-27 23:40:05,759 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 234 selfloop transitions, 44 changer transitions 0/281 dead transitions. [2024-06-27 23:40:05,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 281 transitions, 3103 flow [2024-06-27 23:40:05,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:40:05,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:40:05,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-27 23:40:05,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38292011019283745 [2024-06-27 23:40:05,760 INFO L175 Difference]: Start difference. First operand has 287 places, 264 transitions, 2207 flow. Second operand 11 states and 139 transitions. [2024-06-27 23:40:05,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 281 transitions, 3103 flow [2024-06-27 23:40:06,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 281 transitions, 3022 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-27 23:40:06,258 INFO L231 Difference]: Finished difference. Result has 290 places, 268 transitions, 2315 flow [2024-06-27 23:40:06,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2126, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2315, PETRI_PLACES=290, PETRI_TRANSITIONS=268} [2024-06-27 23:40:06,259 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 258 predicate places. [2024-06-27 23:40:06,259 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 268 transitions, 2315 flow [2024-06-27 23:40:06,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:06,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:06,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:06,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-27 23:40:06,259 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:40:06,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:06,260 INFO L85 PathProgramCache]: Analyzing trace with hash 163010042, now seen corresponding path program 3 times [2024-06-27 23:40:06,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:06,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624379419] [2024-06-27 23:40:06,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:06,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:06,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:07,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:07,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:07,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624379419] [2024-06-27 23:40:07,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624379419] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:07,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:07,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:40:07,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311885180] [2024-06-27 23:40:07,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:07,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:40:07,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:07,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:40:07,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:40:07,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:40:07,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 268 transitions, 2315 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:07,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:07,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:40:07,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:08,376 INFO L124 PetriNetUnfolderBase]: 509/924 cut-off events. [2024-06-27 23:40:08,376 INFO L125 PetriNetUnfolderBase]: For 190223/190223 co-relation queries the response was YES. [2024-06-27 23:40:08,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8045 conditions, 924 events. 509/924 cut-off events. For 190223/190223 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 4565 event pairs, 64 based on Foata normal form. 1/924 useless extension candidates. Maximal degree in co-relation 7908. Up to 779 conditions per place. [2024-06-27 23:40:08,386 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 234 selfloop transitions, 43 changer transitions 0/280 dead transitions. [2024-06-27 23:40:08,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 280 transitions, 2901 flow [2024-06-27 23:40:08,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:40:08,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:40:08,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-27 23:40:08,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38292011019283745 [2024-06-27 23:40:08,387 INFO L175 Difference]: Start difference. First operand has 290 places, 268 transitions, 2315 flow. Second operand 11 states and 139 transitions. [2024-06-27 23:40:08,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 280 transitions, 2901 flow [2024-06-27 23:40:08,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 280 transitions, 2778 flow, removed 38 selfloop flow, removed 7 redundant places. [2024-06-27 23:40:08,960 INFO L231 Difference]: Finished difference. Result has 294 places, 268 transitions, 2283 flow [2024-06-27 23:40:08,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2192, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2283, PETRI_PLACES=294, PETRI_TRANSITIONS=268} [2024-06-27 23:40:08,960 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 262 predicate places. [2024-06-27 23:40:08,960 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 268 transitions, 2283 flow [2024-06-27 23:40:08,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:08,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:08,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:08,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-27 23:40:08,961 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:40:08,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:08,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1165395782, now seen corresponding path program 1 times [2024-06-27 23:40:08,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:08,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042737622] [2024-06-27 23:40:08,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:08,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:08,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:10,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:10,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:10,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042737622] [2024-06-27 23:40:10,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042737622] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:10,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:10,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:40:10,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992586420] [2024-06-27 23:40:10,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:10,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:40:10,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:10,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:40:10,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:40:10,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:40:10,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 268 transitions, 2283 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:10,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:10,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:40:10,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:10,584 INFO L124 PetriNetUnfolderBase]: 512/929 cut-off events. [2024-06-27 23:40:10,584 INFO L125 PetriNetUnfolderBase]: For 193369/193369 co-relation queries the response was YES. [2024-06-27 23:40:10,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8108 conditions, 929 events. 512/929 cut-off events. For 193369/193369 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 4589 event pairs, 61 based on Foata normal form. 1/929 useless extension candidates. Maximal degree in co-relation 7969. Up to 818 conditions per place. [2024-06-27 23:40:10,593 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 244 selfloop transitions, 36 changer transitions 0/283 dead transitions. [2024-06-27 23:40:10,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 283 transitions, 2903 flow [2024-06-27 23:40:10,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:40:10,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:40:10,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 124 transitions. [2024-06-27 23:40:10,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4175084175084175 [2024-06-27 23:40:10,594 INFO L175 Difference]: Start difference. First operand has 294 places, 268 transitions, 2283 flow. Second operand 9 states and 124 transitions. [2024-06-27 23:40:10,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 283 transitions, 2903 flow [2024-06-27 23:40:11,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 283 transitions, 2803 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-27 23:40:11,257 INFO L231 Difference]: Finished difference. Result has 293 places, 270 transitions, 2294 flow [2024-06-27 23:40:11,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2183, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2294, PETRI_PLACES=293, PETRI_TRANSITIONS=270} [2024-06-27 23:40:11,257 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 261 predicate places. [2024-06-27 23:40:11,257 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 270 transitions, 2294 flow [2024-06-27 23:40:11,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:11,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:11,258 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:11,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-27 23:40:11,258 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:40:11,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:11,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1165395503, now seen corresponding path program 2 times [2024-06-27 23:40:11,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:11,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660972286] [2024-06-27 23:40:11,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:11,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:11,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:12,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:12,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:12,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660972286] [2024-06-27 23:40:12,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660972286] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:12,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:12,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:40:12,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561489472] [2024-06-27 23:40:12,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:12,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:40:12,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:12,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:40:12,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:40:12,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:40:12,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 270 transitions, 2294 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:12,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:12,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:40:12,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:13,108 INFO L124 PetriNetUnfolderBase]: 520/942 cut-off events. [2024-06-27 23:40:13,108 INFO L125 PetriNetUnfolderBase]: For 202676/202676 co-relation queries the response was YES. [2024-06-27 23:40:13,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8356 conditions, 942 events. 520/942 cut-off events. For 202676/202676 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 4658 event pairs, 57 based on Foata normal form. 1/942 useless extension candidates. Maximal degree in co-relation 8217. Up to 808 conditions per place. [2024-06-27 23:40:13,118 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 240 selfloop transitions, 43 changer transitions 0/286 dead transitions. [2024-06-27 23:40:13,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 286 transitions, 3174 flow [2024-06-27 23:40:13,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:40:13,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:40:13,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-27 23:40:13,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-27 23:40:13,120 INFO L175 Difference]: Start difference. First operand has 293 places, 270 transitions, 2294 flow. Second operand 10 states and 130 transitions. [2024-06-27 23:40:13,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 286 transitions, 3174 flow [2024-06-27 23:40:13,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 286 transitions, 3083 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-27 23:40:13,750 INFO L231 Difference]: Finished difference. Result has 296 places, 274 transitions, 2362 flow [2024-06-27 23:40:13,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2203, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2362, PETRI_PLACES=296, PETRI_TRANSITIONS=274} [2024-06-27 23:40:13,750 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 264 predicate places. [2024-06-27 23:40:13,750 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 274 transitions, 2362 flow [2024-06-27 23:40:13,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:13,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:13,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:13,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-27 23:40:13,751 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:40:13,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:13,751 INFO L85 PathProgramCache]: Analyzing trace with hash 307107962, now seen corresponding path program 4 times [2024-06-27 23:40:13,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:13,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490231529] [2024-06-27 23:40:13,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:13,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:13,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:15,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:15,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:15,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490231529] [2024-06-27 23:40:15,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490231529] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:15,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:15,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:40:15,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136235642] [2024-06-27 23:40:15,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:15,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:40:15,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:15,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:40:15,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:40:15,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:40:15,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 274 transitions, 2362 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:15,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:15,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:40:15,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:15,881 INFO L124 PetriNetUnfolderBase]: 523/947 cut-off events. [2024-06-27 23:40:15,882 INFO L125 PetriNetUnfolderBase]: For 210125/210125 co-relation queries the response was YES. [2024-06-27 23:40:15,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8470 conditions, 947 events. 523/947 cut-off events. For 210125/210125 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 4690 event pairs, 63 based on Foata normal form. 1/947 useless extension candidates. Maximal degree in co-relation 8329. Up to 793 conditions per place. [2024-06-27 23:40:15,890 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 235 selfloop transitions, 49 changer transitions 0/287 dead transitions. [2024-06-27 23:40:15,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 287 transitions, 3008 flow [2024-06-27 23:40:15,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:40:15,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:40:15,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-27 23:40:15,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403030303030303 [2024-06-27 23:40:15,891 INFO L175 Difference]: Start difference. First operand has 296 places, 274 transitions, 2362 flow. Second operand 10 states and 133 transitions. [2024-06-27 23:40:15,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 287 transitions, 3008 flow [2024-06-27 23:40:16,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 287 transitions, 2927 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-27 23:40:16,606 INFO L231 Difference]: Finished difference. Result has 300 places, 276 transitions, 2438 flow [2024-06-27 23:40:16,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2281, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2438, PETRI_PLACES=300, PETRI_TRANSITIONS=276} [2024-06-27 23:40:16,607 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 268 predicate places. [2024-06-27 23:40:16,607 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 276 transitions, 2438 flow [2024-06-27 23:40:16,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:16,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:16,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:16,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-27 23:40:16,607 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:40:16,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:16,608 INFO L85 PathProgramCache]: Analyzing trace with hash 307108179, now seen corresponding path program 3 times [2024-06-27 23:40:16,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:16,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769676636] [2024-06-27 23:40:16,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:16,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:16,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:17,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:17,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:17,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769676636] [2024-06-27 23:40:17,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769676636] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:17,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:17,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:40:17,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217546727] [2024-06-27 23:40:17,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:17,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:40:17,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:17,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:40:17,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:40:18,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:40:18,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 276 transitions, 2438 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:18,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:18,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:40:18,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:18,392 INFO L124 PetriNetUnfolderBase]: 526/952 cut-off events. [2024-06-27 23:40:18,392 INFO L125 PetriNetUnfolderBase]: For 214091/214091 co-relation queries the response was YES. [2024-06-27 23:40:18,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8611 conditions, 952 events. 526/952 cut-off events. For 214091/214091 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 4727 event pairs, 57 based on Foata normal form. 1/952 useless extension candidates. Maximal degree in co-relation 8468. Up to 817 conditions per place. [2024-06-27 23:40:18,401 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 244 selfloop transitions, 43 changer transitions 0/290 dead transitions. [2024-06-27 23:40:18,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 290 transitions, 3296 flow [2024-06-27 23:40:18,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:40:18,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:40:18,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-27 23:40:18,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396969696969697 [2024-06-27 23:40:18,402 INFO L175 Difference]: Start difference. First operand has 300 places, 276 transitions, 2438 flow. Second operand 10 states and 131 transitions. [2024-06-27 23:40:18,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 290 transitions, 3296 flow [2024-06-27 23:40:19,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 290 transitions, 3155 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-27 23:40:19,151 INFO L231 Difference]: Finished difference. Result has 302 places, 278 transitions, 2418 flow [2024-06-27 23:40:19,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2297, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2418, PETRI_PLACES=302, PETRI_TRANSITIONS=278} [2024-06-27 23:40:19,152 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 270 predicate places. [2024-06-27 23:40:19,152 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 278 transitions, 2418 flow [2024-06-27 23:40:19,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:19,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:19,152 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:19,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-27 23:40:19,153 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:40:19,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:19,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1375543354, now seen corresponding path program 5 times [2024-06-27 23:40:19,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:19,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094940627] [2024-06-27 23:40:19,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:19,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:19,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:20,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:20,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:20,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094940627] [2024-06-27 23:40:20,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094940627] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:20,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:20,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:40:20,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327255602] [2024-06-27 23:40:20,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:20,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:40:20,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:20,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:40:20,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:40:20,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:40:20,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 278 transitions, 2418 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:20,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:20,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:40:20,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:21,065 INFO L124 PetriNetUnfolderBase]: 534/969 cut-off events. [2024-06-27 23:40:21,066 INFO L125 PetriNetUnfolderBase]: For 221044/221044 co-relation queries the response was YES. [2024-06-27 23:40:21,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8863 conditions, 969 events. 534/969 cut-off events. For 221044/221044 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 4838 event pairs, 63 based on Foata normal form. 1/969 useless extension candidates. Maximal degree in co-relation 8719. Up to 801 conditions per place. [2024-06-27 23:40:21,075 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 239 selfloop transitions, 52 changer transitions 0/294 dead transitions. [2024-06-27 23:40:21,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 294 transitions, 3364 flow [2024-06-27 23:40:21,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:40:21,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:40:21,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-27 23:40:21,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39118457300275483 [2024-06-27 23:40:21,077 INFO L175 Difference]: Start difference. First operand has 302 places, 278 transitions, 2418 flow. Second operand 11 states and 142 transitions. [2024-06-27 23:40:21,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 294 transitions, 3364 flow [2024-06-27 23:40:21,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 294 transitions, 3271 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-27 23:40:21,849 INFO L231 Difference]: Finished difference. Result has 306 places, 282 transitions, 2546 flow [2024-06-27 23:40:21,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2325, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2546, PETRI_PLACES=306, PETRI_TRANSITIONS=282} [2024-06-27 23:40:21,849 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 274 predicate places. [2024-06-27 23:40:21,849 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 282 transitions, 2546 flow [2024-06-27 23:40:21,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:21,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:21,850 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:21,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-27 23:40:21,850 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:40:21,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:21,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1375549151, now seen corresponding path program 4 times [2024-06-27 23:40:21,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:21,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405454908] [2024-06-27 23:40:21,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:21,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:21,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:23,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:23,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:23,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405454908] [2024-06-27 23:40:23,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405454908] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:23,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:23,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:40:23,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892871060] [2024-06-27 23:40:23,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:23,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:40:23,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:23,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:40:23,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:40:23,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:40:23,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 282 transitions, 2546 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:23,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:23,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:40:23,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:23,549 INFO L124 PetriNetUnfolderBase]: 532/966 cut-off events. [2024-06-27 23:40:23,549 INFO L125 PetriNetUnfolderBase]: For 219011/219011 co-relation queries the response was YES. [2024-06-27 23:40:23,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8800 conditions, 966 events. 532/966 cut-off events. For 219011/219011 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 4878 event pairs, 52 based on Foata normal form. 1/966 useless extension candidates. Maximal degree in co-relation 8655. Up to 828 conditions per place. [2024-06-27 23:40:23,559 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 248 selfloop transitions, 42 changer transitions 0/293 dead transitions. [2024-06-27 23:40:23,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 293 transitions, 3154 flow [2024-06-27 23:40:23,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:40:23,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:40:23,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-27 23:40:23,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396969696969697 [2024-06-27 23:40:23,560 INFO L175 Difference]: Start difference. First operand has 306 places, 282 transitions, 2546 flow. Second operand 10 states and 131 transitions. [2024-06-27 23:40:23,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 293 transitions, 3154 flow [2024-06-27 23:40:24,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 293 transitions, 3021 flow, removed 38 selfloop flow, removed 7 redundant places. [2024-06-27 23:40:24,306 INFO L231 Difference]: Finished difference. Result has 309 places, 282 transitions, 2502 flow [2024-06-27 23:40:24,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2413, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2502, PETRI_PLACES=309, PETRI_TRANSITIONS=282} [2024-06-27 23:40:24,307 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 277 predicate places. [2024-06-27 23:40:24,307 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 282 transitions, 2502 flow [2024-06-27 23:40:24,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:24,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:24,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:24,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-27 23:40:24,307 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:40:24,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:24,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1375548934, now seen corresponding path program 6 times [2024-06-27 23:40:24,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:24,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237665369] [2024-06-27 23:40:24,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:24,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:24,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:25,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:25,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:25,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237665369] [2024-06-27 23:40:25,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237665369] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:25,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:25,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:40:25,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512686568] [2024-06-27 23:40:25,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:25,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:40:25,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:25,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:40:25,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:40:25,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:40:25,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 282 transitions, 2502 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:25,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:25,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:40:25,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:26,254 INFO L124 PetriNetUnfolderBase]: 530/963 cut-off events. [2024-06-27 23:40:26,254 INFO L125 PetriNetUnfolderBase]: For 215498/215498 co-relation queries the response was YES. [2024-06-27 23:40:26,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8676 conditions, 963 events. 530/963 cut-off events. For 215498/215498 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 4809 event pairs, 63 based on Foata normal form. 1/963 useless extension candidates. Maximal degree in co-relation 8529. Up to 787 conditions per place. [2024-06-27 23:40:26,264 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 236 selfloop transitions, 54 changer transitions 0/293 dead transitions. [2024-06-27 23:40:26,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 293 transitions, 3110 flow [2024-06-27 23:40:26,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:40:26,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:40:26,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-27 23:40:26,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39118457300275483 [2024-06-27 23:40:26,265 INFO L175 Difference]: Start difference. First operand has 309 places, 282 transitions, 2502 flow. Second operand 11 states and 142 transitions. [2024-06-27 23:40:26,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 293 transitions, 3110 flow [2024-06-27 23:40:27,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 293 transitions, 2965 flow, removed 20 selfloop flow, removed 10 redundant places. [2024-06-27 23:40:27,047 INFO L231 Difference]: Finished difference. Result has 310 places, 282 transitions, 2470 flow [2024-06-27 23:40:27,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2357, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2470, PETRI_PLACES=310, PETRI_TRANSITIONS=282} [2024-06-27 23:40:27,047 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 278 predicate places. [2024-06-27 23:40:27,047 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 282 transitions, 2470 flow [2024-06-27 23:40:27,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:27,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:27,048 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:27,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-27 23:40:27,048 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:40:27,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:27,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1366484753, now seen corresponding path program 5 times [2024-06-27 23:40:27,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:27,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900503246] [2024-06-27 23:40:27,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:27,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:27,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:28,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:28,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:28,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900503246] [2024-06-27 23:40:28,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900503246] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:28,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:28,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:40:28,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939525648] [2024-06-27 23:40:28,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:28,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:40:28,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:28,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:40:28,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:40:28,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:40:28,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 282 transitions, 2470 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:28,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:28,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:40:28,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:28,793 INFO L124 PetriNetUnfolderBase]: 548/992 cut-off events. [2024-06-27 23:40:28,793 INFO L125 PetriNetUnfolderBase]: For 239788/239788 co-relation queries the response was YES. [2024-06-27 23:40:28,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9267 conditions, 992 events. 548/992 cut-off events. For 239788/239788 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 4995 event pairs, 52 based on Foata normal form. 1/992 useless extension candidates. Maximal degree in co-relation 9119. Up to 796 conditions per place. [2024-06-27 23:40:28,802 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 237 selfloop transitions, 63 changer transitions 0/303 dead transitions. [2024-06-27 23:40:28,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 303 transitions, 3940 flow [2024-06-27 23:40:28,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:40:28,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:40:28,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-27 23:40:28,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41515151515151516 [2024-06-27 23:40:28,803 INFO L175 Difference]: Start difference. First operand has 310 places, 282 transitions, 2470 flow. Second operand 10 states and 137 transitions. [2024-06-27 23:40:28,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 303 transitions, 3940 flow [2024-06-27 23:40:29,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 303 transitions, 3820 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 23:40:29,521 INFO L231 Difference]: Finished difference. Result has 310 places, 290 transitions, 2629 flow [2024-06-27 23:40:29,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2350, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2629, PETRI_PLACES=310, PETRI_TRANSITIONS=290} [2024-06-27 23:40:29,522 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 278 predicate places. [2024-06-27 23:40:29,522 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 290 transitions, 2629 flow [2024-06-27 23:40:29,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:29,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:29,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:29,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-27 23:40:29,522 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:40:29,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:29,523 INFO L85 PathProgramCache]: Analyzing trace with hash 154930106, now seen corresponding path program 2 times [2024-06-27 23:40:29,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:29,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716578539] [2024-06-27 23:40:29,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:29,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:29,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:30,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:30,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:30,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716578539] [2024-06-27 23:40:30,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716578539] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:30,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:30,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:40:30,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602117554] [2024-06-27 23:40:30,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:30,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:40:30,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:30,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:40:30,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:40:30,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:40:30,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 290 transitions, 2629 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:30,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:30,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:40:30,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:31,157 INFO L124 PetriNetUnfolderBase]: 561/1013 cut-off events. [2024-06-27 23:40:31,158 INFO L125 PetriNetUnfolderBase]: For 257730/257730 co-relation queries the response was YES. [2024-06-27 23:40:31,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9735 conditions, 1013 events. 561/1013 cut-off events. For 257730/257730 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5156 event pairs, 56 based on Foata normal form. 1/1013 useless extension candidates. Maximal degree in co-relation 9586. Up to 820 conditions per place. [2024-06-27 23:40:31,169 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 247 selfloop transitions, 59 changer transitions 0/309 dead transitions. [2024-06-27 23:40:31,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 309 transitions, 3835 flow [2024-06-27 23:40:31,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:40:31,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:40:31,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 130 transitions. [2024-06-27 23:40:31,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4377104377104377 [2024-06-27 23:40:31,171 INFO L175 Difference]: Start difference. First operand has 310 places, 290 transitions, 2629 flow. Second operand 9 states and 130 transitions. [2024-06-27 23:40:31,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 309 transitions, 3835 flow [2024-06-27 23:40:32,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 309 transitions, 3739 flow, removed 28 selfloop flow, removed 4 redundant places. [2024-06-27 23:40:32,003 INFO L231 Difference]: Finished difference. Result has 315 places, 296 transitions, 2757 flow [2024-06-27 23:40:32,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2533, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2757, PETRI_PLACES=315, PETRI_TRANSITIONS=296} [2024-06-27 23:40:32,004 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 283 predicate places. [2024-06-27 23:40:32,004 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 296 transitions, 2757 flow [2024-06-27 23:40:32,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:32,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:32,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:32,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-27 23:40:32,004 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:40:32,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:32,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1867199068, now seen corresponding path program 7 times [2024-06-27 23:40:32,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:32,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691607097] [2024-06-27 23:40:32,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:32,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:32,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:33,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:33,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:33,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691607097] [2024-06-27 23:40:33,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691607097] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:33,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:33,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:40:33,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579281315] [2024-06-27 23:40:33,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:33,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:40:33,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:33,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:40:33,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:40:33,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:40:33,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 296 transitions, 2757 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:33,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:33,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:40:33,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:33,981 INFO L124 PetriNetUnfolderBase]: 574/1038 cut-off events. [2024-06-27 23:40:33,981 INFO L125 PetriNetUnfolderBase]: For 276789/276789 co-relation queries the response was YES. [2024-06-27 23:40:33,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10324 conditions, 1038 events. 574/1038 cut-off events. For 276789/276789 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 5288 event pairs, 63 based on Foata normal form. 1/1038 useless extension candidates. Maximal degree in co-relation 10174. Up to 815 conditions per place. [2024-06-27 23:40:33,994 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 242 selfloop transitions, 69 changer transitions 0/314 dead transitions. [2024-06-27 23:40:33,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 314 transitions, 4053 flow [2024-06-27 23:40:33,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:40:33,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:40:33,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-27 23:40:33,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4022038567493113 [2024-06-27 23:40:33,995 INFO L175 Difference]: Start difference. First operand has 315 places, 296 transitions, 2757 flow. Second operand 11 states and 146 transitions. [2024-06-27 23:40:33,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 314 transitions, 4053 flow [2024-06-27 23:40:34,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 314 transitions, 3981 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-27 23:40:34,908 INFO L231 Difference]: Finished difference. Result has 322 places, 302 transitions, 3006 flow [2024-06-27 23:40:34,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2685, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3006, PETRI_PLACES=322, PETRI_TRANSITIONS=302} [2024-06-27 23:40:34,908 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 290 predicate places. [2024-06-27 23:40:34,908 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 302 transitions, 3006 flow [2024-06-27 23:40:34,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:34,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:34,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:34,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-27 23:40:34,909 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:40:34,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:34,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1859847201, now seen corresponding path program 6 times [2024-06-27 23:40:34,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:34,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610132874] [2024-06-27 23:40:34,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:34,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:34,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:36,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:36,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:36,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610132874] [2024-06-27 23:40:36,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610132874] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:36,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:36,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:40:36,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087220039] [2024-06-27 23:40:36,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:36,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:40:36,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:36,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:40:36,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:40:36,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:40:36,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 302 transitions, 3006 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:36,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:36,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:40:36,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:36,803 INFO L124 PetriNetUnfolderBase]: 572/1035 cut-off events. [2024-06-27 23:40:36,804 INFO L125 PetriNetUnfolderBase]: For 274867/274867 co-relation queries the response was YES. [2024-06-27 23:40:36,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10342 conditions, 1035 events. 572/1035 cut-off events. For 274867/274867 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 5282 event pairs, 57 based on Foata normal form. 1/1035 useless extension candidates. Maximal degree in co-relation 10189. Up to 836 conditions per place. [2024-06-27 23:40:36,815 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 247 selfloop transitions, 64 changer transitions 0/314 dead transitions. [2024-06-27 23:40:36,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 314 transitions, 4132 flow [2024-06-27 23:40:36,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:40:36,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:40:36,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-27 23:40:36,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-27 23:40:36,816 INFO L175 Difference]: Start difference. First operand has 322 places, 302 transitions, 3006 flow. Second operand 10 states and 135 transitions. [2024-06-27 23:40:36,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 314 transitions, 4132 flow [2024-06-27 23:40:37,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 314 transitions, 3891 flow, removed 54 selfloop flow, removed 8 redundant places. [2024-06-27 23:40:37,680 INFO L231 Difference]: Finished difference. Result has 324 places, 302 transitions, 2898 flow [2024-06-27 23:40:37,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2765, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2898, PETRI_PLACES=324, PETRI_TRANSITIONS=302} [2024-06-27 23:40:37,681 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 292 predicate places. [2024-06-27 23:40:37,681 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 302 transitions, 2898 flow [2024-06-27 23:40:37,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:37,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:37,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:37,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-27 23:40:37,681 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:40:37,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:37,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1366744223, now seen corresponding path program 7 times [2024-06-27 23:40:37,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:37,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974492885] [2024-06-27 23:40:37,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:37,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:37,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:38,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:38,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:38,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974492885] [2024-06-27 23:40:38,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974492885] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:38,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:38,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:40:38,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165735669] [2024-06-27 23:40:38,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:38,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:40:38,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:38,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:40:38,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:40:39,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:40:39,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 302 transitions, 2898 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:39,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:39,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:40:39,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:39,336 INFO L124 PetriNetUnfolderBase]: 570/1032 cut-off events. [2024-06-27 23:40:39,337 INFO L125 PetriNetUnfolderBase]: For 270949/270949 co-relation queries the response was YES. [2024-06-27 23:40:39,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10050 conditions, 1032 events. 570/1032 cut-off events. For 270949/270949 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 5260 event pairs, 57 based on Foata normal form. 1/1032 useless extension candidates. Maximal degree in co-relation 9897. Up to 834 conditions per place. [2024-06-27 23:40:39,349 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 240 selfloop transitions, 70 changer transitions 0/313 dead transitions. [2024-06-27 23:40:39,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 313 transitions, 3784 flow [2024-06-27 23:40:39,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:40:39,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:40:39,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-27 23:40:39,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403030303030303 [2024-06-27 23:40:39,350 INFO L175 Difference]: Start difference. First operand has 324 places, 302 transitions, 2898 flow. Second operand 10 states and 133 transitions. [2024-06-27 23:40:39,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 313 transitions, 3784 flow [2024-06-27 23:40:40,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 313 transitions, 3638 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-27 23:40:40,192 INFO L231 Difference]: Finished difference. Result has 326 places, 302 transitions, 2897 flow [2024-06-27 23:40:40,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2752, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2897, PETRI_PLACES=326, PETRI_TRANSITIONS=302} [2024-06-27 23:40:40,192 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 294 predicate places. [2024-06-27 23:40:40,192 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 302 transitions, 2897 flow [2024-06-27 23:40:40,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:40,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:40,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:40,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-27 23:40:40,193 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:40:40,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:40,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1359119866, now seen corresponding path program 8 times [2024-06-27 23:40:40,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:40,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467941910] [2024-06-27 23:40:40,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:40,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:40,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:41,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:41,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:41,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467941910] [2024-06-27 23:40:41,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467941910] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:41,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:41,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:40:41,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87247898] [2024-06-27 23:40:41,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:41,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:40:41,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:41,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:40:41,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:40:41,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:40:41,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 302 transitions, 2897 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:41,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:41,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:40:41,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:42,360 INFO L124 PetriNetUnfolderBase]: 568/1029 cut-off events. [2024-06-27 23:40:42,360 INFO L125 PetriNetUnfolderBase]: For 268023/268023 co-relation queries the response was YES. [2024-06-27 23:40:42,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9935 conditions, 1029 events. 568/1029 cut-off events. For 268023/268023 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 5251 event pairs, 63 based on Foata normal form. 1/1029 useless extension candidates. Maximal degree in co-relation 9781. Up to 807 conditions per place. [2024-06-27 23:40:42,372 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 239 selfloop transitions, 71 changer transitions 0/313 dead transitions. [2024-06-27 23:40:42,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 313 transitions, 3785 flow [2024-06-27 23:40:42,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:40:42,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:40:42,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-27 23:40:42,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39669421487603307 [2024-06-27 23:40:42,373 INFO L175 Difference]: Start difference. First operand has 326 places, 302 transitions, 2897 flow. Second operand 11 states and 144 transitions. [2024-06-27 23:40:42,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 313 transitions, 3785 flow [2024-06-27 23:40:43,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 313 transitions, 3618 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-27 23:40:43,196 INFO L231 Difference]: Finished difference. Result has 328 places, 302 transitions, 2877 flow [2024-06-27 23:40:43,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2730, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2877, PETRI_PLACES=328, PETRI_TRANSITIONS=302} [2024-06-27 23:40:43,196 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 296 predicate places. [2024-06-27 23:40:43,196 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 302 transitions, 2877 flow [2024-06-27 23:40:43,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:43,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:43,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:43,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-27 23:40:43,197 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:40:43,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:43,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1359125663, now seen corresponding path program 8 times [2024-06-27 23:40:43,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:43,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571903416] [2024-06-27 23:40:43,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:43,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:43,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:44,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:44,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:44,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571903416] [2024-06-27 23:40:44,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571903416] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:44,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:44,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:40:44,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255680054] [2024-06-27 23:40:44,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:44,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:40:44,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:44,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:40:44,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:40:44,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:40:44,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 302 transitions, 2877 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:44,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:44,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:40:44,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:44,963 INFO L124 PetriNetUnfolderBase]: 571/1034 cut-off events. [2024-06-27 23:40:44,963 INFO L125 PetriNetUnfolderBase]: For 272699/272699 co-relation queries the response was YES. [2024-06-27 23:40:44,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9989 conditions, 1034 events. 571/1034 cut-off events. For 272699/272699 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 5302 event pairs, 52 based on Foata normal form. 1/1034 useless extension candidates. Maximal degree in co-relation 9834. Up to 835 conditions per place. [2024-06-27 23:40:44,975 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 247 selfloop transitions, 65 changer transitions 0/315 dead transitions. [2024-06-27 23:40:44,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 315 transitions, 3809 flow [2024-06-27 23:40:44,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:40:44,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:40:44,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-27 23:40:44,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-27 23:40:44,976 INFO L175 Difference]: Start difference. First operand has 328 places, 302 transitions, 2877 flow. Second operand 10 states and 135 transitions. [2024-06-27 23:40:44,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 315 transitions, 3809 flow [2024-06-27 23:40:45,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 315 transitions, 3668 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 23:40:45,837 INFO L231 Difference]: Finished difference. Result has 329 places, 304 transitions, 2909 flow [2024-06-27 23:40:45,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2736, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2909, PETRI_PLACES=329, PETRI_TRANSITIONS=304} [2024-06-27 23:40:45,837 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 297 predicate places. [2024-06-27 23:40:45,838 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 304 transitions, 2909 flow [2024-06-27 23:40:45,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:45,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:45,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:45,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-27 23:40:45,838 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:40:45,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:45,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1359327473, now seen corresponding path program 9 times [2024-06-27 23:40:45,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:45,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174487352] [2024-06-27 23:40:45,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:45,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:45,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:47,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:47,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:47,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174487352] [2024-06-27 23:40:47,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174487352] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:47,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:47,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:40:47,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089267091] [2024-06-27 23:40:47,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:47,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:40:47,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:47,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:40:47,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:40:47,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:40:47,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 304 transitions, 2909 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:47,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:47,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:40:47,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:47,546 INFO L124 PetriNetUnfolderBase]: 574/1039 cut-off events. [2024-06-27 23:40:47,546 INFO L125 PetriNetUnfolderBase]: For 277084/277084 co-relation queries the response was YES. [2024-06-27 23:40:47,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10062 conditions, 1039 events. 574/1039 cut-off events. For 277084/277084 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 5329 event pairs, 57 based on Foata normal form. 1/1039 useless extension candidates. Maximal degree in co-relation 9906. Up to 839 conditions per place. [2024-06-27 23:40:47,557 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 250 selfloop transitions, 64 changer transitions 0/317 dead transitions. [2024-06-27 23:40:47,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 317 transitions, 3851 flow [2024-06-27 23:40:47,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:40:47,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:40:47,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-27 23:40:47,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41515151515151516 [2024-06-27 23:40:47,559 INFO L175 Difference]: Start difference. First operand has 329 places, 304 transitions, 2909 flow. Second operand 10 states and 137 transitions. [2024-06-27 23:40:47,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 317 transitions, 3851 flow [2024-06-27 23:40:48,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 317 transitions, 3668 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-27 23:40:48,525 INFO L231 Difference]: Finished difference. Result has 331 places, 306 transitions, 2901 flow [2024-06-27 23:40:48,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2736, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2901, PETRI_PLACES=331, PETRI_TRANSITIONS=306} [2024-06-27 23:40:48,526 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 299 predicate places. [2024-06-27 23:40:48,526 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 306 transitions, 2901 flow [2024-06-27 23:40:48,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:48,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:48,526 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:48,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-27 23:40:48,527 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:40:48,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:48,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1359334913, now seen corresponding path program 10 times [2024-06-27 23:40:48,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:48,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452171169] [2024-06-27 23:40:48,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:48,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:48,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:49,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:49,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:49,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452171169] [2024-06-27 23:40:49,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452171169] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:49,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:49,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:40:49,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914635604] [2024-06-27 23:40:49,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:49,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:40:49,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:49,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:40:49,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:40:49,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:40:49,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 306 transitions, 2901 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:49,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:49,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:40:49,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:50,299 INFO L124 PetriNetUnfolderBase]: 572/1036 cut-off events. [2024-06-27 23:40:50,300 INFO L125 PetriNetUnfolderBase]: For 273684/273684 co-relation queries the response was YES. [2024-06-27 23:40:50,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9860 conditions, 1036 events. 572/1036 cut-off events. For 273684/273684 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 5309 event pairs, 57 based on Foata normal form. 1/1036 useless extension candidates. Maximal degree in co-relation 9704. Up to 837 conditions per place. [2024-06-27 23:40:50,312 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 248 selfloop transitions, 65 changer transitions 0/316 dead transitions. [2024-06-27 23:40:50,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 316 transitions, 3551 flow [2024-06-27 23:40:50,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:40:50,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:40:50,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-27 23:40:50,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-27 23:40:50,314 INFO L175 Difference]: Start difference. First operand has 331 places, 306 transitions, 2901 flow. Second operand 10 states and 135 transitions. [2024-06-27 23:40:50,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 316 transitions, 3551 flow [2024-06-27 23:40:51,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 316 transitions, 3342 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-27 23:40:51,176 INFO L231 Difference]: Finished difference. Result has 332 places, 306 transitions, 2827 flow [2024-06-27 23:40:51,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2692, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2827, PETRI_PLACES=332, PETRI_TRANSITIONS=306} [2024-06-27 23:40:51,177 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 300 predicate places. [2024-06-27 23:40:51,177 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 306 transitions, 2827 flow [2024-06-27 23:40:51,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:51,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:51,177 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:51,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-27 23:40:51,177 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:40:51,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:51,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1366477096, now seen corresponding path program 9 times [2024-06-27 23:40:51,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:51,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930925955] [2024-06-27 23:40:51,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:51,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:51,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:52,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:52,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:52,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930925955] [2024-06-27 23:40:52,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930925955] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:52,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:52,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:40:52,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689106769] [2024-06-27 23:40:52,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:52,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:40:52,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:52,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:40:52,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:40:52,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:40:52,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 306 transitions, 2827 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:52,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:52,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:40:52,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:53,445 INFO L124 PetriNetUnfolderBase]: 575/1043 cut-off events. [2024-06-27 23:40:53,445 INFO L125 PetriNetUnfolderBase]: For 278150/278150 co-relation queries the response was YES. [2024-06-27 23:40:53,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9898 conditions, 1043 events. 575/1043 cut-off events. For 278150/278150 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 5368 event pairs, 63 based on Foata normal form. 1/1043 useless extension candidates. Maximal degree in co-relation 9741. Up to 818 conditions per place. [2024-06-27 23:40:53,456 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 240 selfloop transitions, 76 changer transitions 0/319 dead transitions. [2024-06-27 23:40:53,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 319 transitions, 3783 flow [2024-06-27 23:40:53,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:40:53,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:40:53,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-27 23:40:53,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-27 23:40:53,457 INFO L175 Difference]: Start difference. First operand has 332 places, 306 transitions, 2827 flow. Second operand 11 states and 143 transitions. [2024-06-27 23:40:53,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 319 transitions, 3783 flow [2024-06-27 23:40:54,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 319 transitions, 3617 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 23:40:54,344 INFO L231 Difference]: Finished difference. Result has 333 places, 308 transitions, 2866 flow [2024-06-27 23:40:54,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2661, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2866, PETRI_PLACES=333, PETRI_TRANSITIONS=308} [2024-06-27 23:40:54,344 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 301 predicate places. [2024-06-27 23:40:54,344 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 308 transitions, 2866 flow [2024-06-27 23:40:54,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:54,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:54,345 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:54,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-27 23:40:54,345 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:40:54,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:54,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1366744502, now seen corresponding path program 3 times [2024-06-27 23:40:54,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:54,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019599821] [2024-06-27 23:40:54,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:54,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:54,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:55,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:55,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:55,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019599821] [2024-06-27 23:40:55,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019599821] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:55,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:55,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:40:55,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846235104] [2024-06-27 23:40:55,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:55,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:40:55,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:55,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:40:55,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:40:55,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:40:55,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 308 transitions, 2866 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:55,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:55,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:40:55,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:56,101 INFO L124 PetriNetUnfolderBase]: 578/1048 cut-off events. [2024-06-27 23:40:56,101 INFO L125 PetriNetUnfolderBase]: For 286804/286804 co-relation queries the response was YES. [2024-06-27 23:40:56,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9978 conditions, 1048 events. 578/1048 cut-off events. For 286804/286804 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 5397 event pairs, 47 based on Foata normal form. 1/1048 useless extension candidates. Maximal degree in co-relation 9820. Up to 848 conditions per place. [2024-06-27 23:40:56,114 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 254 selfloop transitions, 66 changer transitions 0/323 dead transitions. [2024-06-27 23:40:56,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 323 transitions, 4072 flow [2024-06-27 23:40:56,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:40:56,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:40:56,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 129 transitions. [2024-06-27 23:40:56,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43434343434343436 [2024-06-27 23:40:56,115 INFO L175 Difference]: Start difference. First operand has 333 places, 308 transitions, 2866 flow. Second operand 9 states and 129 transitions. [2024-06-27 23:40:56,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 323 transitions, 4072 flow [2024-06-27 23:40:57,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 323 transitions, 3922 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-27 23:40:57,312 INFO L231 Difference]: Finished difference. Result has 334 places, 310 transitions, 2886 flow [2024-06-27 23:40:57,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2716, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2886, PETRI_PLACES=334, PETRI_TRANSITIONS=310} [2024-06-27 23:40:57,313 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 302 predicate places. [2024-06-27 23:40:57,313 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 310 transitions, 2886 flow [2024-06-27 23:40:57,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:57,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:40:57,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:40:57,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-27 23:40:57,314 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:40:57,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:40:57,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1866989322, now seen corresponding path program 4 times [2024-06-27 23:40:57,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:40:57,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901500960] [2024-06-27 23:40:57,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:40:57,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:40:57,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:40:58,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:40:58,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:40:58,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901500960] [2024-06-27 23:40:58,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901500960] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:40:58,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:40:58,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:40:58,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416327198] [2024-06-27 23:40:58,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:40:58,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:40:58,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:40:58,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:40:58,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:40:58,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:40:58,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 310 transitions, 2886 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:40:58,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:40:58,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:40:58,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:40:58,961 INFO L124 PetriNetUnfolderBase]: 576/1045 cut-off events. [2024-06-27 23:40:58,961 INFO L125 PetriNetUnfolderBase]: For 282866/282866 co-relation queries the response was YES. [2024-06-27 23:40:58,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9838 conditions, 1045 events. 576/1045 cut-off events. For 282866/282866 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 5371 event pairs, 47 based on Foata normal form. 1/1045 useless extension candidates. Maximal degree in co-relation 9680. Up to 846 conditions per place. [2024-06-27 23:40:58,974 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 261 selfloop transitions, 58 changer transitions 0/322 dead transitions. [2024-06-27 23:40:58,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 322 transitions, 3806 flow [2024-06-27 23:40:58,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:40:58,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:40:58,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 130 transitions. [2024-06-27 23:40:58,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4377104377104377 [2024-06-27 23:40:58,976 INFO L175 Difference]: Start difference. First operand has 334 places, 310 transitions, 2886 flow. Second operand 9 states and 130 transitions. [2024-06-27 23:40:58,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 322 transitions, 3806 flow [2024-06-27 23:41:00,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 322 transitions, 3658 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-27 23:41:00,261 INFO L231 Difference]: Finished difference. Result has 337 places, 310 transitions, 2860 flow [2024-06-27 23:41:00,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2738, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2860, PETRI_PLACES=337, PETRI_TRANSITIONS=310} [2024-06-27 23:41:00,262 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 305 predicate places. [2024-06-27 23:41:00,262 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 310 transitions, 2860 flow [2024-06-27 23:41:00,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:00,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:41:00,262 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:41:00,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-27 23:41:00,263 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:41:00,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:41:00,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1866997258, now seen corresponding path program 10 times [2024-06-27 23:41:00,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:41:00,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651700492] [2024-06-27 23:41:00,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:41:00,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:41:00,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:41:01,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:41:01,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:41:01,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651700492] [2024-06-27 23:41:01,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651700492] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:41:01,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:41:01,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:41:01,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776777599] [2024-06-27 23:41:01,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:41:01,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:41:01,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:41:01,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:41:01,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:41:01,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:41:01,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 310 transitions, 2860 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:01,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:41:01,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:41:01,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:41:02,137 INFO L124 PetriNetUnfolderBase]: 574/1042 cut-off events. [2024-06-27 23:41:02,138 INFO L125 PetriNetUnfolderBase]: For 278987/278987 co-relation queries the response was YES. [2024-06-27 23:41:02,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9683 conditions, 1042 events. 574/1042 cut-off events. For 278987/278987 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 5360 event pairs, 54 based on Foata normal form. 1/1042 useless extension candidates. Maximal degree in co-relation 9524. Up to 818 conditions per place. [2024-06-27 23:41:02,150 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 247 selfloop transitions, 70 changer transitions 0/320 dead transitions. [2024-06-27 23:41:02,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 320 transitions, 3518 flow [2024-06-27 23:41:02,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:41:02,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:41:02,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-27 23:41:02,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39944903581267216 [2024-06-27 23:41:02,152 INFO L175 Difference]: Start difference. First operand has 337 places, 310 transitions, 2860 flow. Second operand 11 states and 145 transitions. [2024-06-27 23:41:02,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 320 transitions, 3518 flow [2024-06-27 23:41:03,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 320 transitions, 3303 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-27 23:41:03,318 INFO L231 Difference]: Finished difference. Result has 339 places, 310 transitions, 2790 flow [2024-06-27 23:41:03,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2645, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2790, PETRI_PLACES=339, PETRI_TRANSITIONS=310} [2024-06-27 23:41:03,319 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 307 predicate places. [2024-06-27 23:41:03,319 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 310 transitions, 2790 flow [2024-06-27 23:41:03,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:03,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:41:03,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:41:03,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-27 23:41:03,320 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:41:03,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:41:03,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1859570712, now seen corresponding path program 5 times [2024-06-27 23:41:03,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:41:03,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015734085] [2024-06-27 23:41:03,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:41:03,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:41:03,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:41:04,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:41:04,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:41:04,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015734085] [2024-06-27 23:41:04,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015734085] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:41:04,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:41:04,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:41:04,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493275077] [2024-06-27 23:41:04,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:41:04,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:41:04,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:41:04,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:41:04,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:41:04,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:41:04,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 310 transitions, 2790 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:04,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:41:04,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:41:04,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:41:05,148 INFO L124 PetriNetUnfolderBase]: 572/1039 cut-off events. [2024-06-27 23:41:05,148 INFO L125 PetriNetUnfolderBase]: For 274859/274859 co-relation queries the response was YES. [2024-06-27 23:41:05,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9513 conditions, 1039 events. 572/1039 cut-off events. For 274859/274859 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 5365 event pairs, 47 based on Foata normal form. 1/1039 useless extension candidates. Maximal degree in co-relation 9352. Up to 841 conditions per place. [2024-06-27 23:41:05,161 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 245 selfloop transitions, 73 changer transitions 0/321 dead transitions. [2024-06-27 23:41:05,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 321 transitions, 3452 flow [2024-06-27 23:41:05,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:41:05,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:41:05,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 126 transitions. [2024-06-27 23:41:05,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-06-27 23:41:05,162 INFO L175 Difference]: Start difference. First operand has 339 places, 310 transitions, 2790 flow. Second operand 9 states and 126 transitions. [2024-06-27 23:41:05,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 321 transitions, 3452 flow [2024-06-27 23:41:06,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 321 transitions, 3234 flow, removed 10 selfloop flow, removed 12 redundant places. [2024-06-27 23:41:06,213 INFO L231 Difference]: Finished difference. Result has 336 places, 310 transitions, 2723 flow [2024-06-27 23:41:06,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2572, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2723, PETRI_PLACES=336, PETRI_TRANSITIONS=310} [2024-06-27 23:41:06,214 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 304 predicate places. [2024-06-27 23:41:06,214 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 310 transitions, 2723 flow [2024-06-27 23:41:06,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:06,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:41:06,214 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:41:06,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-27 23:41:06,215 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:41:06,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:41:06,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1859570371, now seen corresponding path program 1 times [2024-06-27 23:41:06,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:41:06,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221272904] [2024-06-27 23:41:06,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:41:06,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:41:06,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:41:07,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:41:07,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:41:07,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221272904] [2024-06-27 23:41:07,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221272904] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:41:07,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:41:07,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:41:07,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535518639] [2024-06-27 23:41:07,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:41:07,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:41:07,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:41:07,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:41:07,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:41:07,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-06-27 23:41:07,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 310 transitions, 2723 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:07,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:41:07,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-06-27 23:41:07,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:41:08,265 INFO L124 PetriNetUnfolderBase]: 543/1007 cut-off events. [2024-06-27 23:41:08,265 INFO L125 PetriNetUnfolderBase]: For 279991/279992 co-relation queries the response was YES. [2024-06-27 23:41:08,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9309 conditions, 1007 events. 543/1007 cut-off events. For 279991/279992 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 5319 event pairs, 64 based on Foata normal form. 2/1003 useless extension candidates. Maximal degree in co-relation 9148. Up to 824 conditions per place. [2024-06-27 23:41:08,278 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 254 selfloop transitions, 25 changer transitions 0/323 dead transitions. [2024-06-27 23:41:08,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 323 transitions, 3333 flow [2024-06-27 23:41:08,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:41:08,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:41:08,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 129 transitions. [2024-06-27 23:41:08,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43434343434343436 [2024-06-27 23:41:08,279 INFO L175 Difference]: Start difference. First operand has 336 places, 310 transitions, 2723 flow. Second operand 9 states and 129 transitions. [2024-06-27 23:41:08,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 323 transitions, 3333 flow [2024-06-27 23:41:09,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 323 transitions, 3179 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-27 23:41:09,424 INFO L231 Difference]: Finished difference. Result has 337 places, 312 transitions, 2654 flow [2024-06-27 23:41:09,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2569, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2654, PETRI_PLACES=337, PETRI_TRANSITIONS=312} [2024-06-27 23:41:09,424 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 305 predicate places. [2024-06-27 23:41:09,425 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 312 transitions, 2654 flow [2024-06-27 23:41:09,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:09,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:41:09,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:41:09,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-27 23:41:09,425 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:41:09,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:41:09,425 INFO L85 PathProgramCache]: Analyzing trace with hash 2110463414, now seen corresponding path program 6 times [2024-06-27 23:41:09,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:41:09,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804286213] [2024-06-27 23:41:09,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:41:09,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:41:09,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:41:10,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:41:10,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:41:10,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804286213] [2024-06-27 23:41:10,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804286213] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:41:10,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:41:10,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:41:10,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624294371] [2024-06-27 23:41:10,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:41:10,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:41:10,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:41:10,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:41:10,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:41:10,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:41:10,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 312 transitions, 2654 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:10,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:41:10,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:41:10,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:41:11,273 INFO L124 PetriNetUnfolderBase]: 588/1064 cut-off events. [2024-06-27 23:41:11,274 INFO L125 PetriNetUnfolderBase]: For 299114/299114 co-relation queries the response was YES. [2024-06-27 23:41:11,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9932 conditions, 1064 events. 588/1064 cut-off events. For 299114/299114 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 5510 event pairs, 61 based on Foata normal form. 1/1064 useless extension candidates. Maximal degree in co-relation 9770. Up to 768 conditions per place. [2024-06-27 23:41:11,287 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 251 selfloop transitions, 78 changer transitions 0/332 dead transitions. [2024-06-27 23:41:11,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 332 transitions, 4268 flow [2024-06-27 23:41:11,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:41:11,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:41:11,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 136 transitions. [2024-06-27 23:41:11,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45791245791245794 [2024-06-27 23:41:11,288 INFO L175 Difference]: Start difference. First operand has 337 places, 312 transitions, 2654 flow. Second operand 9 states and 136 transitions. [2024-06-27 23:41:11,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 332 transitions, 4268 flow [2024-06-27 23:41:12,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 332 transitions, 4199 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-27 23:41:12,439 INFO L231 Difference]: Finished difference. Result has 339 places, 320 transitions, 2894 flow [2024-06-27 23:41:12,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2585, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2894, PETRI_PLACES=339, PETRI_TRANSITIONS=320} [2024-06-27 23:41:12,440 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 307 predicate places. [2024-06-27 23:41:12,440 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 320 transitions, 2894 flow [2024-06-27 23:41:12,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:12,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:41:12,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:41:12,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-27 23:41:12,441 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:41:12,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:41:12,441 INFO L85 PathProgramCache]: Analyzing trace with hash -2111298783, now seen corresponding path program 11 times [2024-06-27 23:41:12,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:41:12,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654789820] [2024-06-27 23:41:12,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:41:12,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:41:12,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:41:13,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:41:13,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:41:13,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654789820] [2024-06-27 23:41:13,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654789820] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:41:13,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:41:13,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:41:13,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920685184] [2024-06-27 23:41:13,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:41:13,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:41:13,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:41:13,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:41:13,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:41:13,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:41:13,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 320 transitions, 2894 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:13,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:41:13,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:41:13,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:41:14,202 INFO L124 PetriNetUnfolderBase]: 601/1086 cut-off events. [2024-06-27 23:41:14,202 INFO L125 PetriNetUnfolderBase]: For 321698/321698 co-relation queries the response was YES. [2024-06-27 23:41:14,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10519 conditions, 1086 events. 601/1086 cut-off events. For 321698/321698 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 5628 event pairs, 62 based on Foata normal form. 1/1086 useless extension candidates. Maximal degree in co-relation 10356. Up to 663 conditions per place. [2024-06-27 23:41:14,214 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 223 selfloop transitions, 114 changer transitions 0/340 dead transitions. [2024-06-27 23:41:14,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 340 transitions, 4530 flow [2024-06-27 23:41:14,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:41:14,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:41:14,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 139 transitions. [2024-06-27 23:41:14,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4212121212121212 [2024-06-27 23:41:14,215 INFO L175 Difference]: Start difference. First operand has 339 places, 320 transitions, 2894 flow. Second operand 10 states and 139 transitions. [2024-06-27 23:41:14,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 340 transitions, 4530 flow [2024-06-27 23:41:15,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 340 transitions, 4373 flow, removed 29 selfloop flow, removed 4 redundant places. [2024-06-27 23:41:15,253 INFO L231 Difference]: Finished difference. Result has 345 places, 328 transitions, 3118 flow [2024-06-27 23:41:15,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2737, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3118, PETRI_PLACES=345, PETRI_TRANSITIONS=328} [2024-06-27 23:41:15,253 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 313 predicate places. [2024-06-27 23:41:15,253 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 328 transitions, 3118 flow [2024-06-27 23:41:15,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:15,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:41:15,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:41:15,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-27 23:41:15,254 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:41:15,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:41:15,254 INFO L85 PathProgramCache]: Analyzing trace with hash 2110196008, now seen corresponding path program 11 times [2024-06-27 23:41:15,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:41:15,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099566247] [2024-06-27 23:41:15,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:41:15,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:41:15,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:41:16,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:41:16,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:41:16,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099566247] [2024-06-27 23:41:16,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099566247] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:41:16,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:41:16,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:41:16,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254823036] [2024-06-27 23:41:16,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:41:16,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:41:16,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:41:16,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:41:16,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:41:17,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:41:17,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 328 transitions, 3118 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:17,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:41:17,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:41:17,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:41:17,601 INFO L124 PetriNetUnfolderBase]: 614/1111 cut-off events. [2024-06-27 23:41:17,601 INFO L125 PetriNetUnfolderBase]: For 344975/344975 co-relation queries the response was YES. [2024-06-27 23:41:17,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11145 conditions, 1111 events. 614/1111 cut-off events. For 344975/344975 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 5818 event pairs, 70 based on Foata normal form. 1/1111 useless extension candidates. Maximal degree in co-relation 10980. Up to 676 conditions per place. [2024-06-27 23:41:17,612 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 230 selfloop transitions, 115 changer transitions 0/348 dead transitions. [2024-06-27 23:41:17,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 348 transitions, 4848 flow [2024-06-27 23:41:17,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:41:17,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:41:17,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-27 23:41:17,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4049586776859504 [2024-06-27 23:41:17,613 INFO L175 Difference]: Start difference. First operand has 345 places, 328 transitions, 3118 flow. Second operand 11 states and 147 transitions. [2024-06-27 23:41:17,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 348 transitions, 4848 flow [2024-06-27 23:41:18,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 348 transitions, 4759 flow, removed 24 selfloop flow, removed 4 redundant places. [2024-06-27 23:41:18,966 INFO L231 Difference]: Finished difference. Result has 352 places, 336 transitions, 3484 flow [2024-06-27 23:41:18,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3029, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3484, PETRI_PLACES=352, PETRI_TRANSITIONS=336} [2024-06-27 23:41:18,967 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 320 predicate places. [2024-06-27 23:41:18,967 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 336 transitions, 3484 flow [2024-06-27 23:41:18,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:18,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:41:18,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:41:18,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-27 23:41:18,967 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:41:18,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:41:18,968 INFO L85 PathProgramCache]: Analyzing trace with hash 4986717, now seen corresponding path program 2 times [2024-06-27 23:41:18,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:41:18,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417161984] [2024-06-27 23:41:18,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:41:18,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:41:18,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:41:20,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:41:20,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:41:20,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417161984] [2024-06-27 23:41:20,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417161984] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:41:20,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:41:20,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:41:20,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801536523] [2024-06-27 23:41:20,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:41:20,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:41:20,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:41:20,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:41:20,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:41:20,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:41:20,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 336 transitions, 3484 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:20,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:41:20,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:41:20,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:41:21,450 INFO L124 PetriNetUnfolderBase]: 589/1084 cut-off events. [2024-06-27 23:41:21,451 INFO L125 PetriNetUnfolderBase]: For 366156/366157 co-relation queries the response was YES. [2024-06-27 23:41:21,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11336 conditions, 1084 events. 589/1084 cut-off events. For 366156/366157 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 5781 event pairs, 81 based on Foata normal form. 2/1077 useless extension candidates. Maximal degree in co-relation 11169. Up to 903 conditions per place. [2024-06-27 23:41:21,464 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 281 selfloop transitions, 22 changer transitions 0/351 dead transitions. [2024-06-27 23:41:21,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 351 transitions, 4442 flow [2024-06-27 23:41:21,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:41:21,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:41:21,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-27 23:41:21,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3712121212121212 [2024-06-27 23:41:21,465 INFO L175 Difference]: Start difference. First operand has 352 places, 336 transitions, 3484 flow. Second operand 12 states and 147 transitions. [2024-06-27 23:41:21,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 351 transitions, 4442 flow [2024-06-27 23:41:22,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 351 transitions, 4334 flow, removed 34 selfloop flow, removed 5 redundant places. [2024-06-27 23:41:22,702 INFO L231 Difference]: Finished difference. Result has 359 places, 340 transitions, 3489 flow [2024-06-27 23:41:22,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3376, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3489, PETRI_PLACES=359, PETRI_TRANSITIONS=340} [2024-06-27 23:41:22,703 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 327 predicate places. [2024-06-27 23:41:22,703 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 340 transitions, 3489 flow [2024-06-27 23:41:22,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:22,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:41:22,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:41:22,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-27 23:41:22,704 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:41:22,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:41:22,705 INFO L85 PathProgramCache]: Analyzing trace with hash -320417400, now seen corresponding path program 12 times [2024-06-27 23:41:22,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:41:22,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455545513] [2024-06-27 23:41:22,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:41:22,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:41:22,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:41:24,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:41:24,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:41:24,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455545513] [2024-06-27 23:41:24,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455545513] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:41:24,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:41:24,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:41:24,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203579036] [2024-06-27 23:41:24,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:41:24,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:41:24,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:41:24,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:41:24,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:41:24,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:41:24,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 340 transitions, 3489 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:24,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:41:24,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:41:24,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:41:24,913 INFO L124 PetriNetUnfolderBase]: 620/1121 cut-off events. [2024-06-27 23:41:24,913 INFO L125 PetriNetUnfolderBase]: For 355566/355566 co-relation queries the response was YES. [2024-06-27 23:41:24,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11420 conditions, 1121 events. 620/1121 cut-off events. For 355566/355566 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 5855 event pairs, 61 based on Foata normal form. 1/1121 useless extension candidates. Maximal degree in co-relation 11251. Up to 687 conditions per place. [2024-06-27 23:41:24,927 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 202 selfloop transitions, 145 changer transitions 0/350 dead transitions. [2024-06-27 23:41:24,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 350 transitions, 4475 flow [2024-06-27 23:41:24,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:41:24,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:41:24,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-27 23:41:24,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3884297520661157 [2024-06-27 23:41:24,928 INFO L175 Difference]: Start difference. First operand has 359 places, 340 transitions, 3489 flow. Second operand 11 states and 141 transitions. [2024-06-27 23:41:24,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 350 transitions, 4475 flow [2024-06-27 23:41:26,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 350 transitions, 4382 flow, removed 35 selfloop flow, removed 8 redundant places. [2024-06-27 23:41:26,220 INFO L231 Difference]: Finished difference. Result has 362 places, 340 transitions, 3691 flow [2024-06-27 23:41:26,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3396, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3691, PETRI_PLACES=362, PETRI_TRANSITIONS=340} [2024-06-27 23:41:26,220 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 330 predicate places. [2024-06-27 23:41:26,220 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 340 transitions, 3691 flow [2024-06-27 23:41:26,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:26,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:41:26,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:41:26,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-27 23:41:26,221 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:41:26,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:41:26,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1936609693, now seen corresponding path program 12 times [2024-06-27 23:41:26,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:41:26,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174960645] [2024-06-27 23:41:26,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:41:26,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:41:26,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:41:27,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:41:27,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:41:27,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174960645] [2024-06-27 23:41:27,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174960645] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:41:27,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:41:27,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:41:27,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439113331] [2024-06-27 23:41:27,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:41:27,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:41:27,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:41:27,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:41:27,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:41:27,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:41:27,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 340 transitions, 3691 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:27,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:41:27,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:41:27,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:41:28,066 INFO L124 PetriNetUnfolderBase]: 623/1126 cut-off events. [2024-06-27 23:41:28,066 INFO L125 PetriNetUnfolderBase]: For 361033/361033 co-relation queries the response was YES. [2024-06-27 23:41:28,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11711 conditions, 1126 events. 623/1126 cut-off events. For 361033/361033 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 5895 event pairs, 53 based on Foata normal form. 1/1126 useless extension candidates. Maximal degree in co-relation 11540. Up to 698 conditions per place. [2024-06-27 23:41:28,079 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 218 selfloop transitions, 132 changer transitions 0/353 dead transitions. [2024-06-27 23:41:28,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 353 transitions, 4995 flow [2024-06-27 23:41:28,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:41:28,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:41:28,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-27 23:41:28,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-27 23:41:28,081 INFO L175 Difference]: Start difference. First operand has 362 places, 340 transitions, 3691 flow. Second operand 10 states and 135 transitions. [2024-06-27 23:41:28,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 353 transitions, 4995 flow [2024-06-27 23:41:29,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 353 transitions, 4728 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-27 23:41:29,274 INFO L231 Difference]: Finished difference. Result has 362 places, 342 transitions, 3729 flow [2024-06-27 23:41:29,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3424, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3729, PETRI_PLACES=362, PETRI_TRANSITIONS=342} [2024-06-27 23:41:29,275 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 330 predicate places. [2024-06-27 23:41:29,275 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 342 transitions, 3729 flow [2024-06-27 23:41:29,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:29,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:41:29,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:41:29,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-27 23:41:29,275 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:41:29,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:41:29,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1936601974, now seen corresponding path program 7 times [2024-06-27 23:41:29,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:41:29,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075750935] [2024-06-27 23:41:29,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:41:29,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:41:29,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:41:30,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:41:30,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:41:30,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075750935] [2024-06-27 23:41:30,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075750935] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:41:30,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:41:30,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:41:30,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642953171] [2024-06-27 23:41:30,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:41:30,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:41:30,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:41:30,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:41:30,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:41:30,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:41:30,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 342 transitions, 3729 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:30,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:41:30,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:41:30,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:41:31,059 INFO L124 PetriNetUnfolderBase]: 626/1130 cut-off events. [2024-06-27 23:41:31,060 INFO L125 PetriNetUnfolderBase]: For 366348/366348 co-relation queries the response was YES. [2024-06-27 23:41:31,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11753 conditions, 1130 events. 626/1130 cut-off events. For 366348/366348 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 5901 event pairs, 52 based on Foata normal form. 1/1130 useless extension candidates. Maximal degree in co-relation 11582. Up to 829 conditions per place. [2024-06-27 23:41:31,074 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 263 selfloop transitions, 89 changer transitions 0/355 dead transitions. [2024-06-27 23:41:31,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 355 transitions, 5041 flow [2024-06-27 23:41:31,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:41:31,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:41:31,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 132 transitions. [2024-06-27 23:41:31,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-27 23:41:31,075 INFO L175 Difference]: Start difference. First operand has 362 places, 342 transitions, 3729 flow. Second operand 9 states and 132 transitions. [2024-06-27 23:41:31,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 355 transitions, 5041 flow [2024-06-27 23:41:32,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 355 transitions, 4818 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-27 23:41:32,339 INFO L231 Difference]: Finished difference. Result has 364 places, 344 transitions, 3725 flow [2024-06-27 23:41:32,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3506, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3725, PETRI_PLACES=364, PETRI_TRANSITIONS=344} [2024-06-27 23:41:32,340 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 332 predicate places. [2024-06-27 23:41:32,340 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 344 transitions, 3725 flow [2024-06-27 23:41:32,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:32,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:41:32,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:41:32,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-27 23:41:32,341 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:41:32,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:41:32,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1936342504, now seen corresponding path program 8 times [2024-06-27 23:41:32,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:41:32,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016793446] [2024-06-27 23:41:32,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:41:32,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:41:32,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:41:33,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:41:33,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:41:33,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016793446] [2024-06-27 23:41:33,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016793446] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:41:33,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:41:33,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:41:33,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125521252] [2024-06-27 23:41:33,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:41:33,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:41:33,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:41:33,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:41:33,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:41:33,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:41:33,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 344 transitions, 3725 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:33,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:41:33,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:41:33,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:41:34,165 INFO L124 PetriNetUnfolderBase]: 634/1143 cut-off events. [2024-06-27 23:41:34,165 INFO L125 PetriNetUnfolderBase]: For 381188/381188 co-relation queries the response was YES. [2024-06-27 23:41:34,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11972 conditions, 1143 events. 634/1143 cut-off events. For 381188/381188 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 5982 event pairs, 52 based on Foata normal form. 1/1143 useless extension candidates. Maximal degree in co-relation 11801. Up to 839 conditions per place. [2024-06-27 23:41:34,177 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 267 selfloop transitions, 90 changer transitions 0/360 dead transitions. [2024-06-27 23:41:34,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 360 transitions, 5373 flow [2024-06-27 23:41:34,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:41:34,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:41:34,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 135 transitions. [2024-06-27 23:41:34,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-27 23:41:34,179 INFO L175 Difference]: Start difference. First operand has 364 places, 344 transitions, 3725 flow. Second operand 9 states and 135 transitions. [2024-06-27 23:41:34,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 360 transitions, 5373 flow [2024-06-27 23:41:35,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 360 transitions, 5144 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-27 23:41:35,538 INFO L231 Difference]: Finished difference. Result has 366 places, 348 transitions, 3761 flow [2024-06-27 23:41:35,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3512, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3761, PETRI_PLACES=366, PETRI_TRANSITIONS=348} [2024-06-27 23:41:35,539 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 334 predicate places. [2024-06-27 23:41:35,539 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 348 transitions, 3761 flow [2024-06-27 23:41:35,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:35,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:41:35,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:41:35,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-27 23:41:35,540 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:41:35,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:41:35,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1936333204, now seen corresponding path program 9 times [2024-06-27 23:41:35,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:41:35,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781869942] [2024-06-27 23:41:35,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:41:35,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:41:35,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:41:36,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:41:36,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:41:36,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781869942] [2024-06-27 23:41:36,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781869942] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:41:36,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:41:36,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:41:36,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469653791] [2024-06-27 23:41:36,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:41:36,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:41:36,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:41:36,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:41:36,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:41:36,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:41:36,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 348 transitions, 3761 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:36,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:41:36,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:41:36,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:41:37,431 INFO L124 PetriNetUnfolderBase]: 632/1140 cut-off events. [2024-06-27 23:41:37,431 INFO L125 PetriNetUnfolderBase]: For 376804/376804 co-relation queries the response was YES. [2024-06-27 23:41:37,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11811 conditions, 1140 events. 632/1140 cut-off events. For 376804/376804 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 5989 event pairs, 52 based on Foata normal form. 1/1140 useless extension candidates. Maximal degree in co-relation 11639. Up to 837 conditions per place. [2024-06-27 23:41:37,446 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 265 selfloop transitions, 91 changer transitions 0/359 dead transitions. [2024-06-27 23:41:37,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 359 transitions, 5053 flow [2024-06-27 23:41:37,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:41:37,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:41:37,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 133 transitions. [2024-06-27 23:41:37,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4478114478114478 [2024-06-27 23:41:37,447 INFO L175 Difference]: Start difference. First operand has 366 places, 348 transitions, 3761 flow. Second operand 9 states and 133 transitions. [2024-06-27 23:41:37,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 359 transitions, 5053 flow [2024-06-27 23:41:38,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 359 transitions, 4847 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-27 23:41:38,766 INFO L231 Difference]: Finished difference. Result has 370 places, 348 transitions, 3742 flow [2024-06-27 23:41:38,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3555, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3742, PETRI_PLACES=370, PETRI_TRANSITIONS=348} [2024-06-27 23:41:38,766 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 338 predicate places. [2024-06-27 23:41:38,766 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 348 transitions, 3742 flow [2024-06-27 23:41:38,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:38,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:41:38,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:41:38,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-27 23:41:38,767 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:41:38,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:41:38,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1936332863, now seen corresponding path program 3 times [2024-06-27 23:41:38,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:41:38,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421156310] [2024-06-27 23:41:38,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:41:38,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:41:38,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:41:40,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:41:40,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:41:40,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421156310] [2024-06-27 23:41:40,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421156310] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:41:40,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:41:40,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:41:40,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247458764] [2024-06-27 23:41:40,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:41:40,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:41:40,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:41:40,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:41:40,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:41:40,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-06-27 23:41:40,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 348 transitions, 3742 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:40,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:41:40,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-06-27 23:41:40,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:41:40,810 INFO L124 PetriNetUnfolderBase]: 601/1107 cut-off events. [2024-06-27 23:41:40,810 INFO L125 PetriNetUnfolderBase]: For 388847/388848 co-relation queries the response was YES. [2024-06-27 23:41:40,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11614 conditions, 1107 events. 601/1107 cut-off events. For 388847/388848 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 5935 event pairs, 58 based on Foata normal form. 2/1104 useless extension candidates. Maximal degree in co-relation 11441. Up to 864 conditions per place. [2024-06-27 23:41:40,824 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 267 selfloop transitions, 41 changer transitions 0/359 dead transitions. [2024-06-27 23:41:40,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 359 transitions, 4412 flow [2024-06-27 23:41:40,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:41:40,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:41:40,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 133 transitions. [2024-06-27 23:41:40,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4478114478114478 [2024-06-27 23:41:40,825 INFO L175 Difference]: Start difference. First operand has 370 places, 348 transitions, 3742 flow. Second operand 9 states and 133 transitions. [2024-06-27 23:41:40,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 359 transitions, 4412 flow [2024-06-27 23:41:42,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 359 transitions, 4225 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-27 23:41:42,128 INFO L231 Difference]: Finished difference. Result has 371 places, 350 transitions, 3680 flow [2024-06-27 23:41:42,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3555, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3680, PETRI_PLACES=371, PETRI_TRANSITIONS=350} [2024-06-27 23:41:42,129 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 339 predicate places. [2024-06-27 23:41:42,129 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 350 transitions, 3680 flow [2024-06-27 23:41:42,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:42,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:41:42,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:41:42,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-27 23:41:42,130 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:41:42,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:41:42,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1936342783, now seen corresponding path program 13 times [2024-06-27 23:41:42,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:41:42,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419797234] [2024-06-27 23:41:42,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:41:42,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:41:42,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:41:43,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:41:43,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:41:43,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419797234] [2024-06-27 23:41:43,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419797234] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:41:43,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:41:43,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:41:43,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224172638] [2024-06-27 23:41:43,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:41:43,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:41:43,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:41:43,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:41:43,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:41:43,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:41:43,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 350 transitions, 3680 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:43,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:41:43,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:41:43,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:41:43,966 INFO L124 PetriNetUnfolderBase]: 643/1157 cut-off events. [2024-06-27 23:41:43,966 INFO L125 PetriNetUnfolderBase]: For 396745/396745 co-relation queries the response was YES. [2024-06-27 23:41:43,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12052 conditions, 1157 events. 643/1157 cut-off events. For 396745/396745 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 6078 event pairs, 53 based on Foata normal form. 1/1157 useless extension candidates. Maximal degree in co-relation 11878. Up to 728 conditions per place. [2024-06-27 23:41:43,982 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 230 selfloop transitions, 133 changer transitions 0/366 dead transitions. [2024-06-27 23:41:43,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 366 transitions, 5338 flow [2024-06-27 23:41:43,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:41:43,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:41:43,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-06-27 23:41:43,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41818181818181815 [2024-06-27 23:41:43,984 INFO L175 Difference]: Start difference. First operand has 371 places, 350 transitions, 3680 flow. Second operand 10 states and 138 transitions. [2024-06-27 23:41:43,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 366 transitions, 5338 flow [2024-06-27 23:41:45,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 366 transitions, 5229 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-27 23:41:45,355 INFO L231 Difference]: Finished difference. Result has 374 places, 354 transitions, 3902 flow [2024-06-27 23:41:45,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3571, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3902, PETRI_PLACES=374, PETRI_TRANSITIONS=354} [2024-06-27 23:41:45,356 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 342 predicate places. [2024-06-27 23:41:45,356 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 354 transitions, 3902 flow [2024-06-27 23:41:45,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:45,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:41:45,356 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:41:45,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-27 23:41:45,356 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:41:45,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:41:45,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1936602253, now seen corresponding path program 14 times [2024-06-27 23:41:45,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:41:45,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588302193] [2024-06-27 23:41:45,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:41:45,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:41:45,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:41:46,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:41:46,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:41:46,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588302193] [2024-06-27 23:41:46,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588302193] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:41:46,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:41:46,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:41:46,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046168465] [2024-06-27 23:41:46,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:41:46,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:41:46,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:41:46,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:41:46,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:41:46,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:41:46,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 354 transitions, 3902 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:46,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:41:46,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:41:46,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:41:47,347 INFO L124 PetriNetUnfolderBase]: 641/1154 cut-off events. [2024-06-27 23:41:47,347 INFO L125 PetriNetUnfolderBase]: For 392700/392700 co-relation queries the response was YES. [2024-06-27 23:41:47,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12094 conditions, 1154 events. 641/1154 cut-off events. For 392700/392700 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 6054 event pairs, 53 based on Foata normal form. 1/1154 useless extension candidates. Maximal degree in co-relation 11918. Up to 726 conditions per place. [2024-06-27 23:41:47,359 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 228 selfloop transitions, 134 changer transitions 0/365 dead transitions. [2024-06-27 23:41:47,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 365 transitions, 5218 flow [2024-06-27 23:41:47,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:41:47,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:41:47,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 136 transitions. [2024-06-27 23:41:47,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121212121212121 [2024-06-27 23:41:47,361 INFO L175 Difference]: Start difference. First operand has 374 places, 354 transitions, 3902 flow. Second operand 10 states and 136 transitions. [2024-06-27 23:41:47,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 365 transitions, 5218 flow [2024-06-27 23:41:48,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 365 transitions, 4931 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-27 23:41:48,872 INFO L231 Difference]: Finished difference. Result has 378 places, 354 transitions, 3888 flow [2024-06-27 23:41:48,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3615, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3888, PETRI_PLACES=378, PETRI_TRANSITIONS=354} [2024-06-27 23:41:48,873 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 346 predicate places. [2024-06-27 23:41:48,873 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 354 transitions, 3888 flow [2024-06-27 23:41:48,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:48,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:41:48,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:41:48,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-27 23:41:48,873 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:41:48,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:41:48,874 INFO L85 PathProgramCache]: Analyzing trace with hash 4600426, now seen corresponding path program 10 times [2024-06-27 23:41:48,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:41:48,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681240388] [2024-06-27 23:41:48,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:41:48,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:41:48,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:41:50,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:41:50,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:41:50,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681240388] [2024-06-27 23:41:50,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681240388] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:41:50,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:41:50,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:41:50,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317763296] [2024-06-27 23:41:50,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:41:50,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:41:50,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:41:50,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:41:50,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:41:50,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:41:50,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 354 transitions, 3888 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:50,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:41:50,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:41:50,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:41:50,748 INFO L124 PetriNetUnfolderBase]: 644/1161 cut-off events. [2024-06-27 23:41:50,748 INFO L125 PetriNetUnfolderBase]: For 398370/398370 co-relation queries the response was YES. [2024-06-27 23:41:50,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12147 conditions, 1161 events. 644/1161 cut-off events. For 398370/398370 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 6092 event pairs, 92 based on Foata normal form. 1/1161 useless extension candidates. Maximal degree in co-relation 11970. Up to 1079 conditions per place. [2024-06-27 23:41:50,762 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 344 selfloop transitions, 18 changer transitions 0/365 dead transitions. [2024-06-27 23:41:50,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 365 transitions, 4666 flow [2024-06-27 23:41:50,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:41:50,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:41:50,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-27 23:41:50,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35454545454545455 [2024-06-27 23:41:50,764 INFO L175 Difference]: Start difference. First operand has 378 places, 354 transitions, 3888 flow. Second operand 10 states and 117 transitions. [2024-06-27 23:41:50,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 365 transitions, 4666 flow [2024-06-27 23:41:51,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 365 transitions, 4403 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-27 23:41:51,960 INFO L231 Difference]: Finished difference. Result has 380 places, 356 transitions, 3704 flow [2024-06-27 23:41:51,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3625, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3704, PETRI_PLACES=380, PETRI_TRANSITIONS=356} [2024-06-27 23:41:51,960 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 348 predicate places. [2024-06-27 23:41:51,961 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 356 transitions, 3704 flow [2024-06-27 23:41:51,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:51,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:41:51,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:41:51,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-27 23:41:51,961 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:41:51,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:41:51,962 INFO L85 PathProgramCache]: Analyzing trace with hash -6450764, now seen corresponding path program 11 times [2024-06-27 23:41:51,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:41:51,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813023840] [2024-06-27 23:41:51,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:41:51,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:41:51,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:41:53,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:41:53,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:41:53,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813023840] [2024-06-27 23:41:53,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813023840] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:41:53,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:41:53,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:41:53,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601820474] [2024-06-27 23:41:53,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:41:53,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:41:53,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:41:53,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:41:53,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:41:53,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:41:53,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 356 transitions, 3704 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:53,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:41:53,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:41:53,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:41:53,738 INFO L124 PetriNetUnfolderBase]: 647/1163 cut-off events. [2024-06-27 23:41:53,738 INFO L125 PetriNetUnfolderBase]: For 403461/403461 co-relation queries the response was YES. [2024-06-27 23:41:53,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11999 conditions, 1163 events. 647/1163 cut-off events. For 403461/403461 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 6107 event pairs, 52 based on Foata normal form. 1/1163 useless extension candidates. Maximal degree in co-relation 11821. Up to 860 conditions per place. [2024-06-27 23:41:53,750 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 259 selfloop transitions, 107 changer transitions 0/369 dead transitions. [2024-06-27 23:41:53,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 369 transitions, 5074 flow [2024-06-27 23:41:53,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:41:53,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:41:53,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 131 transitions. [2024-06-27 23:41:53,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44107744107744107 [2024-06-27 23:41:53,751 INFO L175 Difference]: Start difference. First operand has 380 places, 356 transitions, 3704 flow. Second operand 9 states and 131 transitions. [2024-06-27 23:41:53,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 369 transitions, 5074 flow [2024-06-27 23:41:55,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 369 transitions, 5017 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-27 23:41:55,148 INFO L231 Difference]: Finished difference. Result has 381 places, 358 transitions, 3904 flow [2024-06-27 23:41:55,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3647, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3904, PETRI_PLACES=381, PETRI_TRANSITIONS=358} [2024-06-27 23:41:55,149 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 349 predicate places. [2024-06-27 23:41:55,149 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 358 transitions, 3904 flow [2024-06-27 23:41:55,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:55,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:41:55,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:41:55,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-27 23:41:55,150 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:41:55,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:41:55,160 INFO L85 PathProgramCache]: Analyzing trace with hash 2110473055, now seen corresponding path program 4 times [2024-06-27 23:41:55,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:41:55,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742980618] [2024-06-27 23:41:55,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:41:55,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:41:55,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:41:56,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:41:56,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:41:56,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742980618] [2024-06-27 23:41:56,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742980618] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:41:56,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:41:56,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:41:56,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378235005] [2024-06-27 23:41:56,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:41:56,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:41:56,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:41:56,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:41:56,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:41:56,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-06-27 23:41:56,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 358 transitions, 3904 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:56,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:41:56,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-06-27 23:41:56,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:41:57,209 INFO L124 PetriNetUnfolderBase]: 615/1129 cut-off events. [2024-06-27 23:41:57,210 INFO L125 PetriNetUnfolderBase]: For 416041/416042 co-relation queries the response was YES. [2024-06-27 23:41:57,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11998 conditions, 1129 events. 615/1129 cut-off events. For 416041/416042 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 6064 event pairs, 58 based on Foata normal form. 2/1126 useless extension candidates. Maximal degree in co-relation 11820. Up to 884 conditions per place. [2024-06-27 23:41:57,224 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 277 selfloop transitions, 39 changer transitions 0/369 dead transitions. [2024-06-27 23:41:57,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 369 transitions, 4594 flow [2024-06-27 23:41:57,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:41:57,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:41:57,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 134 transitions. [2024-06-27 23:41:57,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4511784511784512 [2024-06-27 23:41:57,225 INFO L175 Difference]: Start difference. First operand has 381 places, 358 transitions, 3904 flow. Second operand 9 states and 134 transitions. [2024-06-27 23:41:57,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 369 transitions, 4594 flow [2024-06-27 23:41:58,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 369 transitions, 4327 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-27 23:41:58,524 INFO L231 Difference]: Finished difference. Result has 382 places, 360 transitions, 3762 flow [2024-06-27 23:41:58,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3637, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3762, PETRI_PLACES=382, PETRI_TRANSITIONS=360} [2024-06-27 23:41:58,524 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 350 predicate places. [2024-06-27 23:41:58,524 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 360 transitions, 3762 flow [2024-06-27 23:41:58,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:41:58,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:41:58,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:41:58,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-27 23:41:58,525 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:41:58,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:41:58,526 INFO L85 PathProgramCache]: Analyzing trace with hash -6441123, now seen corresponding path program 5 times [2024-06-27 23:41:58,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:41:58,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904503968] [2024-06-27 23:41:58,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:41:58,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:41:58,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:42:00,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:42:00,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:42:00,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904503968] [2024-06-27 23:42:00,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904503968] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:42:00,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:42:00,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:42:00,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481993314] [2024-06-27 23:42:00,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:42:00,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:42:00,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:42:00,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:42:00,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:42:00,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-06-27 23:42:00,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 360 transitions, 3762 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:00,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:42:00,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-06-27 23:42:00,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:42:00,505 INFO L124 PetriNetUnfolderBase]: 613/1126 cut-off events. [2024-06-27 23:42:00,505 INFO L125 PetriNetUnfolderBase]: For 410236/410237 co-relation queries the response was YES. [2024-06-27 23:42:00,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11716 conditions, 1126 events. 613/1126 cut-off events. For 410236/410237 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 6055 event pairs, 58 based on Foata normal form. 2/1123 useless extension candidates. Maximal degree in co-relation 11537. Up to 881 conditions per place. [2024-06-27 23:42:00,520 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 274 selfloop transitions, 44 changer transitions 0/371 dead transitions. [2024-06-27 23:42:00,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 371 transitions, 4460 flow [2024-06-27 23:42:00,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:42:00,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:42:00,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 132 transitions. [2024-06-27 23:42:00,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-27 23:42:00,521 INFO L175 Difference]: Start difference. First operand has 382 places, 360 transitions, 3762 flow. Second operand 9 states and 132 transitions. [2024-06-27 23:42:00,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 371 transitions, 4460 flow [2024-06-27 23:42:02,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 371 transitions, 4351 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-27 23:42:02,063 INFO L231 Difference]: Finished difference. Result has 384 places, 362 transitions, 3792 flow [2024-06-27 23:42:02,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3653, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3792, PETRI_PLACES=384, PETRI_TRANSITIONS=362} [2024-06-27 23:42:02,064 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 352 predicate places. [2024-06-27 23:42:02,064 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 362 transitions, 3792 flow [2024-06-27 23:42:02,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:02,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:42:02,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:42:02,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-27 23:42:02,064 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:42:02,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:42:02,065 INFO L85 PathProgramCache]: Analyzing trace with hash -2118923140, now seen corresponding path program 13 times [2024-06-27 23:42:02,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:42:02,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085373366] [2024-06-27 23:42:02,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:42:02,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:42:02,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:42:03,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:42:03,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:42:03,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085373366] [2024-06-27 23:42:03,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085373366] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:42:03,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:42:03,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:42:03,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675982227] [2024-06-27 23:42:03,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:42:03,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:42:03,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:42:03,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:42:03,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:42:03,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:42:03,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 362 transitions, 3792 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:03,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:42:03,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:42:03,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:42:04,275 INFO L124 PetriNetUnfolderBase]: 651/1173 cut-off events. [2024-06-27 23:42:04,275 INFO L125 PetriNetUnfolderBase]: For 408471/408471 co-relation queries the response was YES. [2024-06-27 23:42:04,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12069 conditions, 1173 events. 651/1173 cut-off events. For 408471/408471 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 6218 event pairs, 61 based on Foata normal form. 1/1173 useless extension candidates. Maximal degree in co-relation 11889. Up to 738 conditions per place. [2024-06-27 23:42:04,290 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 249 selfloop transitions, 123 changer transitions 0/375 dead transitions. [2024-06-27 23:42:04,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 375 transitions, 5202 flow [2024-06-27 23:42:04,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:42:04,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:42:04,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-27 23:42:04,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-27 23:42:04,291 INFO L175 Difference]: Start difference. First operand has 384 places, 362 transitions, 3792 flow. Second operand 11 states and 143 transitions. [2024-06-27 23:42:04,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 375 transitions, 5202 flow [2024-06-27 23:42:05,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 375 transitions, 5079 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-27 23:42:05,853 INFO L231 Difference]: Finished difference. Result has 388 places, 364 transitions, 3974 flow [2024-06-27 23:42:05,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3669, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3974, PETRI_PLACES=388, PETRI_TRANSITIONS=364} [2024-06-27 23:42:05,853 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 356 predicate places. [2024-06-27 23:42:05,854 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 364 transitions, 3974 flow [2024-06-27 23:42:05,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:05,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:42:05,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:42:05,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-27 23:42:05,854 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:42:05,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:42:05,854 INFO L85 PathProgramCache]: Analyzing trace with hash -6451043, now seen corresponding path program 15 times [2024-06-27 23:42:05,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:42:05,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918493539] [2024-06-27 23:42:05,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:42:05,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:42:05,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:42:07,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:42:07,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:42:07,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918493539] [2024-06-27 23:42:07,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918493539] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:42:07,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:42:07,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:42:07,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265029666] [2024-06-27 23:42:07,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:42:07,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:42:07,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:42:07,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:42:07,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:42:07,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:42:07,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 364 transitions, 3974 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:07,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:42:07,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:42:07,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:42:07,817 INFO L124 PetriNetUnfolderBase]: 649/1170 cut-off events. [2024-06-27 23:42:07,818 INFO L125 PetriNetUnfolderBase]: For 403495/403495 co-relation queries the response was YES. [2024-06-27 23:42:07,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12067 conditions, 1170 events. 649/1170 cut-off events. For 403495/403495 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 6174 event pairs, 53 based on Foata normal form. 1/1170 useless extension candidates. Maximal degree in co-relation 11885. Up to 741 conditions per place. [2024-06-27 23:42:07,833 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 207 selfloop transitions, 164 changer transitions 0/374 dead transitions. [2024-06-27 23:42:07,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 374 transitions, 5034 flow [2024-06-27 23:42:07,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:42:07,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:42:07,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-27 23:42:07,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403030303030303 [2024-06-27 23:42:07,834 INFO L175 Difference]: Start difference. First operand has 388 places, 364 transitions, 3974 flow. Second operand 10 states and 133 transitions. [2024-06-27 23:42:07,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 374 transitions, 5034 flow [2024-06-27 23:42:09,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 374 transitions, 4734 flow, removed 35 selfloop flow, removed 8 redundant places. [2024-06-27 23:42:09,279 INFO L231 Difference]: Finished difference. Result has 390 places, 364 transitions, 4007 flow [2024-06-27 23:42:09,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3674, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4007, PETRI_PLACES=390, PETRI_TRANSITIONS=364} [2024-06-27 23:42:09,279 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 358 predicate places. [2024-06-27 23:42:09,279 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 364 transitions, 4007 flow [2024-06-27 23:42:09,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:09,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:42:09,279 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:42:09,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-27 23:42:09,279 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:42:09,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:42:09,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1622633974, now seen corresponding path program 12 times [2024-06-27 23:42:09,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:42:09,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517103204] [2024-06-27 23:42:09,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:42:09,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:42:09,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:42:10,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:42:10,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:42:10,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517103204] [2024-06-27 23:42:10,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517103204] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:42:10,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:42:10,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:42:10,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498281761] [2024-06-27 23:42:10,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:42:10,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:42:10,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:42:10,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:42:10,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:42:10,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:42:10,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 364 transitions, 4007 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:10,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:42:10,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:42:10,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:42:11,155 INFO L124 PetriNetUnfolderBase]: 647/1166 cut-off events. [2024-06-27 23:42:11,156 INFO L125 PetriNetUnfolderBase]: For 397375/397375 co-relation queries the response was YES. [2024-06-27 23:42:11,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11958 conditions, 1166 events. 647/1166 cut-off events. For 397375/397375 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 6167 event pairs, 52 based on Foata normal form. 1/1166 useless extension candidates. Maximal degree in co-relation 11775. Up to 862 conditions per place. [2024-06-27 23:42:11,172 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 265 selfloop transitions, 106 changer transitions 0/374 dead transitions. [2024-06-27 23:42:11,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 374 transitions, 5069 flow [2024-06-27 23:42:11,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:42:11,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:42:11,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 131 transitions. [2024-06-27 23:42:11,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44107744107744107 [2024-06-27 23:42:11,173 INFO L175 Difference]: Start difference. First operand has 390 places, 364 transitions, 4007 flow. Second operand 9 states and 131 transitions. [2024-06-27 23:42:11,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 374 transitions, 5069 flow [2024-06-27 23:42:12,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 374 transitions, 4773 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-27 23:42:12,410 INFO L231 Difference]: Finished difference. Result has 389 places, 364 transitions, 3928 flow [2024-06-27 23:42:12,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3711, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3928, PETRI_PLACES=389, PETRI_TRANSITIONS=364} [2024-06-27 23:42:12,411 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 357 predicate places. [2024-06-27 23:42:12,411 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 364 transitions, 3928 flow [2024-06-27 23:42:12,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:12,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:42:12,411 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:42:12,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-27 23:42:12,411 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:42:12,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:42:12,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1611591743, now seen corresponding path program 6 times [2024-06-27 23:42:12,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:42:12,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804272212] [2024-06-27 23:42:12,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:42:12,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:42:12,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:42:13,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:42:13,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:42:13,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804272212] [2024-06-27 23:42:13,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804272212] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:42:13,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:42:13,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:42:13,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818927828] [2024-06-27 23:42:13,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:42:13,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:42:13,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:42:13,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:42:13,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:42:14,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:42:14,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 364 transitions, 3928 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:14,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:42:14,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:42:14,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:42:14,574 INFO L124 PetriNetUnfolderBase]: 610/1122 cut-off events. [2024-06-27 23:42:14,574 INFO L125 PetriNetUnfolderBase]: For 398398/398399 co-relation queries the response was YES. [2024-06-27 23:42:14,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11484 conditions, 1122 events. 610/1122 cut-off events. For 398398/398399 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 6074 event pairs, 81 based on Foata normal form. 2/1115 useless extension candidates. Maximal degree in co-relation 11301. Up to 939 conditions per place. [2024-06-27 23:42:14,587 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 302 selfloop transitions, 18 changer transitions 0/373 dead transitions. [2024-06-27 23:42:14,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 373 transitions, 4588 flow [2024-06-27 23:42:14,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:42:14,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:42:14,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-27 23:42:14,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38181818181818183 [2024-06-27 23:42:14,588 INFO L175 Difference]: Start difference. First operand has 389 places, 364 transitions, 3928 flow. Second operand 10 states and 126 transitions. [2024-06-27 23:42:14,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 373 transitions, 4588 flow [2024-06-27 23:42:15,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 373 transitions, 4348 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-27 23:42:15,826 INFO L231 Difference]: Finished difference. Result has 391 places, 364 transitions, 3729 flow [2024-06-27 23:42:15,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3688, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3729, PETRI_PLACES=391, PETRI_TRANSITIONS=364} [2024-06-27 23:42:15,827 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 359 predicate places. [2024-06-27 23:42:15,827 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 364 transitions, 3729 flow [2024-06-27 23:42:15,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:15,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:42:15,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:42:15,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-27 23:42:15,828 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:42:15,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:42:15,828 INFO L85 PathProgramCache]: Analyzing trace with hash 2110472714, now seen corresponding path program 13 times [2024-06-27 23:42:15,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:42:15,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098399074] [2024-06-27 23:42:15,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:42:15,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:42:15,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:42:17,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:42:17,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:42:17,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098399074] [2024-06-27 23:42:17,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098399074] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:42:17,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:42:17,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:42:17,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595142143] [2024-06-27 23:42:17,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:42:17,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:42:17,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:42:17,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:42:17,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:42:17,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:42:17,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 364 transitions, 3729 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:17,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:42:17,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:42:17,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:42:17,633 INFO L124 PetriNetUnfolderBase]: 643/1160 cut-off events. [2024-06-27 23:42:17,633 INFO L125 PetriNetUnfolderBase]: For 384950/384950 co-relation queries the response was YES. [2024-06-27 23:42:17,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11407 conditions, 1160 events. 643/1160 cut-off events. For 384950/384950 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 6128 event pairs, 52 based on Foata normal form. 1/1160 useless extension candidates. Maximal degree in co-relation 11222. Up to 857 conditions per place. [2024-06-27 23:42:17,649 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 281 selfloop transitions, 90 changer transitions 0/374 dead transitions. [2024-06-27 23:42:17,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 374 transitions, 4795 flow [2024-06-27 23:42:17,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:42:17,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:42:17,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 133 transitions. [2024-06-27 23:42:17,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4478114478114478 [2024-06-27 23:42:17,650 INFO L175 Difference]: Start difference. First operand has 391 places, 364 transitions, 3729 flow. Second operand 9 states and 133 transitions. [2024-06-27 23:42:17,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 374 transitions, 4795 flow [2024-06-27 23:42:18,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 374 transitions, 4734 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-27 23:42:18,934 INFO L231 Difference]: Finished difference. Result has 391 places, 364 transitions, 3853 flow [2024-06-27 23:42:18,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3668, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3853, PETRI_PLACES=391, PETRI_TRANSITIONS=364} [2024-06-27 23:42:18,934 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 359 predicate places. [2024-06-27 23:42:18,934 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 364 transitions, 3853 flow [2024-06-27 23:42:18,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:18,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:42:18,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:42:18,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-27 23:42:18,935 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:42:18,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:42:18,935 INFO L85 PathProgramCache]: Analyzing trace with hash 2110203944, now seen corresponding path program 14 times [2024-06-27 23:42:18,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:42:18,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227982406] [2024-06-27 23:42:18,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:42:18,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:42:18,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:42:20,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:42:20,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:42:20,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227982406] [2024-06-27 23:42:20,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227982406] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:42:20,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:42:20,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:42:20,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304754676] [2024-06-27 23:42:20,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:42:20,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:42:20,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:42:20,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:42:20,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:42:20,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:42:20,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 364 transitions, 3853 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:20,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:42:20,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:42:20,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:42:20,810 INFO L124 PetriNetUnfolderBase]: 646/1165 cut-off events. [2024-06-27 23:42:20,811 INFO L125 PetriNetUnfolderBase]: For 390204/390204 co-relation queries the response was YES. [2024-06-27 23:42:20,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11613 conditions, 1165 events. 646/1165 cut-off events. For 390204/390204 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 6178 event pairs, 52 based on Foata normal form. 1/1165 useless extension candidates. Maximal degree in co-relation 11428. Up to 861 conditions per place. [2024-06-27 23:42:20,823 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 284 selfloop transitions, 89 changer transitions 0/376 dead transitions. [2024-06-27 23:42:20,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 376 transitions, 4961 flow [2024-06-27 23:42:20,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:42:20,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:42:20,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 135 transitions. [2024-06-27 23:42:20,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-27 23:42:20,824 INFO L175 Difference]: Start difference. First operand has 391 places, 364 transitions, 3853 flow. Second operand 9 states and 135 transitions. [2024-06-27 23:42:20,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 376 transitions, 4961 flow [2024-06-27 23:42:22,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 376 transitions, 4780 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-27 23:42:22,098 INFO L231 Difference]: Finished difference. Result has 393 places, 366 transitions, 3891 flow [2024-06-27 23:42:22,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3676, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3891, PETRI_PLACES=393, PETRI_TRANSITIONS=366} [2024-06-27 23:42:22,099 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 361 predicate places. [2024-06-27 23:42:22,099 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 366 transitions, 3891 flow [2024-06-27 23:42:22,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:22,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:42:22,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:42:22,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-27 23:42:22,099 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:42:22,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:42:22,100 INFO L85 PathProgramCache]: Analyzing trace with hash 2102844575, now seen corresponding path program 16 times [2024-06-27 23:42:22,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:42:22,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565853111] [2024-06-27 23:42:22,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:42:22,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:42:22,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:42:23,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:42:23,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:42:23,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565853111] [2024-06-27 23:42:23,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565853111] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:42:23,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:42:23,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:42:23,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542771632] [2024-06-27 23:42:23,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:42:23,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:42:23,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:42:23,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:42:23,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:42:23,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:42:23,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 366 transitions, 3891 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:23,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:42:23,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:42:23,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:42:23,889 INFO L124 PetriNetUnfolderBase]: 649/1171 cut-off events. [2024-06-27 23:42:23,890 INFO L125 PetriNetUnfolderBase]: For 395494/395494 co-relation queries the response was YES. [2024-06-27 23:42:23,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11683 conditions, 1171 events. 649/1171 cut-off events. For 395494/395494 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 6219 event pairs, 53 based on Foata normal form. 1/1171 useless extension candidates. Maximal degree in co-relation 11497. Up to 741 conditions per place. [2024-06-27 23:42:23,905 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 247 selfloop transitions, 129 changer transitions 0/379 dead transitions. [2024-06-27 23:42:23,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 379 transitions, 5315 flow [2024-06-27 23:42:23,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:42:23,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:42:23,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 136 transitions. [2024-06-27 23:42:23,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121212121212121 [2024-06-27 23:42:23,907 INFO L175 Difference]: Start difference. First operand has 393 places, 366 transitions, 3891 flow. Second operand 10 states and 136 transitions. [2024-06-27 23:42:23,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 379 transitions, 5315 flow [2024-06-27 23:42:25,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 379 transitions, 5128 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-27 23:42:25,307 INFO L231 Difference]: Finished difference. Result has 397 places, 368 transitions, 4003 flow [2024-06-27 23:42:25,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3704, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4003, PETRI_PLACES=397, PETRI_TRANSITIONS=368} [2024-06-27 23:42:25,308 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 365 predicate places. [2024-06-27 23:42:25,308 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 368 transitions, 4003 flow [2024-06-27 23:42:25,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:25,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:42:25,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:42:25,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-27 23:42:25,308 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:42:25,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:42:25,309 INFO L85 PathProgramCache]: Analyzing trace with hash 2110203665, now seen corresponding path program 17 times [2024-06-27 23:42:25,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:42:25,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936686141] [2024-06-27 23:42:25,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:42:25,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:42:25,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:42:26,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:42:26,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:42:26,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936686141] [2024-06-27 23:42:26,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936686141] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:42:26,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:42:26,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:42:26,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240815340] [2024-06-27 23:42:26,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:42:26,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:42:26,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:42:26,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:42:26,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:42:26,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:42:26,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 368 transitions, 4003 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:26,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:42:26,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:42:26,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:42:27,085 INFO L124 PetriNetUnfolderBase]: 657/1184 cut-off events. [2024-06-27 23:42:27,086 INFO L125 PetriNetUnfolderBase]: For 412997/412997 co-relation queries the response was YES. [2024-06-27 23:42:27,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12043 conditions, 1184 events. 657/1184 cut-off events. For 412997/412997 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 6316 event pairs, 53 based on Foata normal form. 1/1184 useless extension candidates. Maximal degree in co-relation 11855. Up to 751 conditions per place. [2024-06-27 23:42:27,103 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 258 selfloop transitions, 123 changer transitions 0/384 dead transitions. [2024-06-27 23:42:27,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 384 transitions, 5795 flow [2024-06-27 23:42:27,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:42:27,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:42:27,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 141 transitions. [2024-06-27 23:42:27,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42727272727272725 [2024-06-27 23:42:27,104 INFO L175 Difference]: Start difference. First operand has 397 places, 368 transitions, 4003 flow. Second operand 10 states and 141 transitions. [2024-06-27 23:42:27,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 384 transitions, 5795 flow [2024-06-27 23:42:28,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 384 transitions, 5527 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-27 23:42:28,473 INFO L231 Difference]: Finished difference. Result has 400 places, 372 transitions, 4066 flow [2024-06-27 23:42:28,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3747, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4066, PETRI_PLACES=400, PETRI_TRANSITIONS=372} [2024-06-27 23:42:28,474 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 368 predicate places. [2024-06-27 23:42:28,477 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 372 transitions, 4066 flow [2024-06-27 23:42:28,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:28,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:42:28,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:42:28,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-27 23:42:28,478 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:42:28,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:42:28,479 INFO L85 PathProgramCache]: Analyzing trace with hash 2110196225, now seen corresponding path program 18 times [2024-06-27 23:42:28,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:42:28,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072712277] [2024-06-27 23:42:28,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:42:28,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:42:28,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:42:29,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:42:29,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:42:29,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072712277] [2024-06-27 23:42:29,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072712277] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:42:29,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:42:29,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:42:29,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675851359] [2024-06-27 23:42:29,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:42:29,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:42:29,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:42:29,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:42:29,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:42:29,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:42:29,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 372 transitions, 4066 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:29,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:42:29,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:42:29,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:42:30,359 INFO L124 PetriNetUnfolderBase]: 655/1181 cut-off events. [2024-06-27 23:42:30,359 INFO L125 PetriNetUnfolderBase]: For 406317/406317 co-relation queries the response was YES. [2024-06-27 23:42:30,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11869 conditions, 1181 events. 655/1181 cut-off events. For 406317/406317 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 6293 event pairs, 53 based on Foata normal form. 1/1181 useless extension candidates. Maximal degree in co-relation 11680. Up to 749 conditions per place. [2024-06-27 23:42:30,375 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 256 selfloop transitions, 124 changer transitions 0/383 dead transitions. [2024-06-27 23:42:30,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 383 transitions, 5470 flow [2024-06-27 23:42:30,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:42:30,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:42:30,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 139 transitions. [2024-06-27 23:42:30,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4212121212121212 [2024-06-27 23:42:30,376 INFO L175 Difference]: Start difference. First operand has 400 places, 372 transitions, 4066 flow. Second operand 10 states and 139 transitions. [2024-06-27 23:42:30,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 383 transitions, 5470 flow [2024-06-27 23:42:31,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 383 transitions, 5206 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-27 23:42:31,543 INFO L231 Difference]: Finished difference. Result has 404 places, 372 transitions, 4055 flow [2024-06-27 23:42:31,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3802, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4055, PETRI_PLACES=404, PETRI_TRANSITIONS=372} [2024-06-27 23:42:31,544 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 372 predicate places. [2024-06-27 23:42:31,544 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 372 transitions, 4055 flow [2024-06-27 23:42:31,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:31,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:42:31,544 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:42:31,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-27 23:42:31,544 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:42:31,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:42:31,545 INFO L85 PathProgramCache]: Analyzing trace with hash 2102844358, now seen corresponding path program 14 times [2024-06-27 23:42:31,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:42:31,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787189636] [2024-06-27 23:42:31,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:42:31,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:42:31,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:42:33,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:42:33,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:42:33,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787189636] [2024-06-27 23:42:33,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787189636] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:42:33,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:42:33,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:42:33,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150178239] [2024-06-27 23:42:33,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:42:33,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:42:33,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:42:33,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:42:33,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:42:33,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:42:33,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 372 transitions, 4055 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:33,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:42:33,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:42:33,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:42:33,769 INFO L124 PetriNetUnfolderBase]: 658/1188 cut-off events. [2024-06-27 23:42:33,769 INFO L125 PetriNetUnfolderBase]: For 411756/411756 co-relation queries the response was YES. [2024-06-27 23:42:33,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11935 conditions, 1188 events. 658/1188 cut-off events. For 411756/411756 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 6364 event pairs, 61 based on Foata normal form. 1/1188 useless extension candidates. Maximal degree in co-relation 11745. Up to 750 conditions per place. [2024-06-27 23:42:33,786 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 260 selfloop transitions, 122 changer transitions 0/385 dead transitions. [2024-06-27 23:42:33,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 385 transitions, 5517 flow [2024-06-27 23:42:33,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:42:33,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:42:33,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-27 23:42:33,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39669421487603307 [2024-06-27 23:42:33,787 INFO L175 Difference]: Start difference. First operand has 404 places, 372 transitions, 4055 flow. Second operand 11 states and 144 transitions. [2024-06-27 23:42:33,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 385 transitions, 5517 flow [2024-06-27 23:42:35,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 385 transitions, 5279 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-27 23:42:35,005 INFO L231 Difference]: Finished difference. Result has 407 places, 374 transitions, 4116 flow [2024-06-27 23:42:35,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3817, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4116, PETRI_PLACES=407, PETRI_TRANSITIONS=374} [2024-06-27 23:42:35,005 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 375 predicate places. [2024-06-27 23:42:35,005 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 374 transitions, 4116 flow [2024-06-27 23:42:35,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:35,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:42:35,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:42:35,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-27 23:42:35,006 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:42:35,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:42:35,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1332576122, now seen corresponding path program 15 times [2024-06-27 23:42:35,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:42:35,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66473327] [2024-06-27 23:42:35,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:42:35,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:42:35,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:42:36,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:42:36,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:42:36,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66473327] [2024-06-27 23:42:36,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66473327] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:42:36,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:42:36,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:42:36,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415643836] [2024-06-27 23:42:36,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:42:36,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:42:36,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:42:36,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:42:36,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:42:36,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:42:36,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 374 transitions, 4116 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:36,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:42:36,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:42:36,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:42:36,745 INFO L124 PetriNetUnfolderBase]: 656/1184 cut-off events. [2024-06-27 23:42:36,745 INFO L125 PetriNetUnfolderBase]: For 404788/404788 co-relation queries the response was YES. [2024-06-27 23:42:36,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11796 conditions, 1184 events. 656/1184 cut-off events. For 404788/404788 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 6302 event pairs, 61 based on Foata normal form. 1/1184 useless extension candidates. Maximal degree in co-relation 11605. Up to 879 conditions per place. [2024-06-27 23:42:36,762 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 285 selfloop transitions, 95 changer transitions 0/383 dead transitions. [2024-06-27 23:42:36,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 383 transitions, 4896 flow [2024-06-27 23:42:36,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:42:36,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:42:36,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 131 transitions. [2024-06-27 23:42:36,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44107744107744107 [2024-06-27 23:42:36,786 INFO L175 Difference]: Start difference. First operand has 407 places, 374 transitions, 4116 flow. Second operand 9 states and 131 transitions. [2024-06-27 23:42:36,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 383 transitions, 4896 flow [2024-06-27 23:42:38,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 383 transitions, 4613 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-27 23:42:38,339 INFO L231 Difference]: Finished difference. Result has 408 places, 374 transitions, 4028 flow [2024-06-27 23:42:38,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3833, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4028, PETRI_PLACES=408, PETRI_TRANSITIONS=374} [2024-06-27 23:42:38,340 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 376 predicate places. [2024-06-27 23:42:38,340 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 374 transitions, 4028 flow [2024-06-27 23:42:38,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:38,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:42:38,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:42:38,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-27 23:42:38,340 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:42:38,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:42:38,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1332575843, now seen corresponding path program 19 times [2024-06-27 23:42:38,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:42:38,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676270388] [2024-06-27 23:42:38,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:42:38,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:42:38,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:42:39,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:42:39,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:42:39,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676270388] [2024-06-27 23:42:39,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676270388] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:42:39,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:42:39,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:42:39,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120841707] [2024-06-27 23:42:39,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:42:39,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:42:39,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:42:39,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:42:39,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:42:39,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:42:39,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 374 transitions, 4028 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:39,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:42:39,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:42:39,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:42:40,111 INFO L124 PetriNetUnfolderBase]: 659/1190 cut-off events. [2024-06-27 23:42:40,112 INFO L125 PetriNetUnfolderBase]: For 409413/409413 co-relation queries the response was YES. [2024-06-27 23:42:40,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11766 conditions, 1190 events. 659/1190 cut-off events. For 409413/409413 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 6350 event pairs, 53 based on Foata normal form. 1/1190 useless extension candidates. Maximal degree in co-relation 11575. Up to 755 conditions per place. [2024-06-27 23:42:40,127 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 255 selfloop transitions, 129 changer transitions 0/387 dead transitions. [2024-06-27 23:42:40,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 387 transitions, 5490 flow [2024-06-27 23:42:40,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:42:40,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:42:40,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-27 23:42:40,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41515151515151516 [2024-06-27 23:42:40,129 INFO L175 Difference]: Start difference. First operand has 408 places, 374 transitions, 4028 flow. Second operand 10 states and 137 transitions. [2024-06-27 23:42:40,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 387 transitions, 5490 flow [2024-06-27 23:42:41,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 387 transitions, 5267 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-27 23:42:41,240 INFO L231 Difference]: Finished difference. Result has 408 places, 376 transitions, 4106 flow [2024-06-27 23:42:41,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3805, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4106, PETRI_PLACES=408, PETRI_TRANSITIONS=376} [2024-06-27 23:42:41,240 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 376 predicate places. [2024-06-27 23:42:41,240 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 376 transitions, 4106 flow [2024-06-27 23:42:41,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:41,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:42:41,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:42:41,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-27 23:42:41,241 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:42:41,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:42:41,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1332568186, now seen corresponding path program 15 times [2024-06-27 23:42:41,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:42:41,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925950733] [2024-06-27 23:42:41,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:42:41,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:42:41,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:42:42,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:42:42,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:42:42,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925950733] [2024-06-27 23:42:42,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925950733] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:42:42,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:42:42,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:42:42,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430006531] [2024-06-27 23:42:42,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:42:42,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:42:42,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:42:42,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:42:42,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:42:43,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:42:43,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 376 transitions, 4106 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:43,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:42:43,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:42:43,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:42:43,565 INFO L124 PetriNetUnfolderBase]: 657/1187 cut-off events. [2024-06-27 23:42:43,565 INFO L125 PetriNetUnfolderBase]: For 402359/402359 co-relation queries the response was YES. [2024-06-27 23:42:43,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11667 conditions, 1187 events. 657/1187 cut-off events. For 402359/402359 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 6340 event pairs, 61 based on Foata normal form. 1/1187 useless extension candidates. Maximal degree in co-relation 11474. Up to 750 conditions per place. [2024-06-27 23:42:43,583 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 263 selfloop transitions, 120 changer transitions 0/386 dead transitions. [2024-06-27 23:42:43,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 386 transitions, 5212 flow [2024-06-27 23:42:43,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:42:43,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:42:43,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-27 23:42:43,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41515151515151516 [2024-06-27 23:42:43,584 INFO L175 Difference]: Start difference. First operand has 408 places, 376 transitions, 4106 flow. Second operand 10 states and 137 transitions. [2024-06-27 23:42:43,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 386 transitions, 5212 flow [2024-06-27 23:42:44,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 386 transitions, 4858 flow, removed 29 selfloop flow, removed 10 redundant places. [2024-06-27 23:42:44,910 INFO L231 Difference]: Finished difference. Result has 408 places, 376 transitions, 3997 flow [2024-06-27 23:42:44,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3752, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3997, PETRI_PLACES=408, PETRI_TRANSITIONS=376} [2024-06-27 23:42:44,911 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 376 predicate places. [2024-06-27 23:42:44,911 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 376 transitions, 3997 flow [2024-06-27 23:42:44,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:44,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:42:44,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:42:44,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-27 23:42:44,911 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:42:44,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:42:44,912 INFO L85 PathProgramCache]: Analyzing trace with hash 2103046385, now seen corresponding path program 20 times [2024-06-27 23:42:44,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:42:44,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675428046] [2024-06-27 23:42:44,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:42:44,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:42:44,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:42:46,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:42:46,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:42:46,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675428046] [2024-06-27 23:42:46,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675428046] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:42:46,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:42:46,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:42:46,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947404194] [2024-06-27 23:42:46,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:42:46,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:42:46,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:42:46,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:42:46,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:42:46,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:42:46,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 376 transitions, 3997 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:46,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:42:46,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:42:46,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:42:46,912 INFO L124 PetriNetUnfolderBase]: 655/1184 cut-off events. [2024-06-27 23:42:46,912 INFO L125 PetriNetUnfolderBase]: For 389013/389013 co-relation queries the response was YES. [2024-06-27 23:42:46,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11431 conditions, 1184 events. 655/1184 cut-off events. For 389013/389013 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 6331 event pairs, 57 based on Foata normal form. 1/1184 useless extension candidates. Maximal degree in co-relation 11237. Up to 750 conditions per place. [2024-06-27 23:42:46,928 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 255 selfloop transitions, 128 changer transitions 0/386 dead transitions. [2024-06-27 23:42:46,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 386 transitions, 5105 flow [2024-06-27 23:42:46,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:42:46,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:42:46,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-27 23:42:46,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41515151515151516 [2024-06-27 23:42:46,930 INFO L175 Difference]: Start difference. First operand has 408 places, 376 transitions, 3997 flow. Second operand 10 states and 137 transitions. [2024-06-27 23:42:46,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 386 transitions, 5105 flow [2024-06-27 23:42:48,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 386 transitions, 4802 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-06-27 23:42:48,377 INFO L231 Difference]: Finished difference. Result has 407 places, 376 transitions, 3955 flow [2024-06-27 23:42:48,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3694, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3955, PETRI_PLACES=407, PETRI_TRANSITIONS=376} [2024-06-27 23:42:48,377 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 375 predicate places. [2024-06-27 23:42:48,377 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 376 transitions, 3955 flow [2024-06-27 23:42:48,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:48,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:42:48,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:42:48,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-27 23:42:48,378 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:42:48,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:42:48,379 INFO L85 PathProgramCache]: Analyzing trace with hash 281900414, now seen corresponding path program 16 times [2024-06-27 23:42:48,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:42:48,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258099358] [2024-06-27 23:42:48,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:42:48,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:42:48,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:42:49,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:42:49,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:42:49,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258099358] [2024-06-27 23:42:49,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258099358] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:42:49,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:42:49,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:42:49,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376737847] [2024-06-27 23:42:49,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:42:49,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:42:49,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:42:49,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:42:49,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:42:49,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:42:49,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 376 transitions, 3955 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:49,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:42:49,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:42:49,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:42:50,095 INFO L124 PetriNetUnfolderBase]: 658/1189 cut-off events. [2024-06-27 23:42:50,095 INFO L125 PetriNetUnfolderBase]: For 398838/398838 co-relation queries the response was YES. [2024-06-27 23:42:50,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11500 conditions, 1189 events. 658/1189 cut-off events. For 398838/398838 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 6369 event pairs, 58 based on Foata normal form. 1/1189 useless extension candidates. Maximal degree in co-relation 11305. Up to 1043 conditions per place. [2024-06-27 23:42:50,111 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 355 selfloop transitions, 38 changer transitions 0/396 dead transitions. [2024-06-27 23:42:50,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 396 transitions, 4847 flow [2024-06-27 23:42:50,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:42:50,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:42:50,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-27 23:42:50,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 23:42:50,112 INFO L175 Difference]: Start difference. First operand has 407 places, 376 transitions, 3955 flow. Second operand 10 states and 132 transitions. [2024-06-27 23:42:50,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 396 transitions, 4847 flow [2024-06-27 23:42:52,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 396 transitions, 4552 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 23:42:52,038 INFO L231 Difference]: Finished difference. Result has 407 places, 378 transitions, 3803 flow [2024-06-27 23:42:52,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3660, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3803, PETRI_PLACES=407, PETRI_TRANSITIONS=378} [2024-06-27 23:42:52,047 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 375 predicate places. [2024-06-27 23:42:52,047 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 378 transitions, 3803 flow [2024-06-27 23:42:52,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:52,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:42:52,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:42:52,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-27 23:42:52,048 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:42:52,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:42:52,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1995846374, now seen corresponding path program 17 times [2024-06-27 23:42:52,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:42:52,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673956682] [2024-06-27 23:42:52,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:42:52,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:42:52,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:42:53,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:42:53,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:42:53,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673956682] [2024-06-27 23:42:53,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673956682] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:42:53,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:42:53,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:42:53,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851558128] [2024-06-27 23:42:53,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:42:53,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:42:53,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:42:53,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:42:53,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:42:53,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:42:53,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 378 transitions, 3803 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:53,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:42:53,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:42:53,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:42:53,813 INFO L124 PetriNetUnfolderBase]: 661/1194 cut-off events. [2024-06-27 23:42:53,815 INFO L125 PetriNetUnfolderBase]: For 403798/403798 co-relation queries the response was YES. [2024-06-27 23:42:53,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11412 conditions, 1194 events. 661/1194 cut-off events. For 403798/403798 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 6390 event pairs, 59 based on Foata normal form. 1/1194 useless extension candidates. Maximal degree in co-relation 11217. Up to 1048 conditions per place. [2024-06-27 23:42:53,827 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 354 selfloop transitions, 42 changer transitions 0/399 dead transitions. [2024-06-27 23:42:53,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 399 transitions, 4707 flow [2024-06-27 23:42:53,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:42:53,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:42:53,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-27 23:42:53,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38292011019283745 [2024-06-27 23:42:53,828 INFO L175 Difference]: Start difference. First operand has 407 places, 378 transitions, 3803 flow. Second operand 11 states and 139 transitions. [2024-06-27 23:42:53,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 399 transitions, 4707 flow [2024-06-27 23:42:55,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 399 transitions, 4586 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-27 23:42:55,360 INFO L231 Difference]: Finished difference. Result has 410 places, 380 transitions, 3837 flow [2024-06-27 23:42:55,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3682, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3837, PETRI_PLACES=410, PETRI_TRANSITIONS=380} [2024-06-27 23:42:55,361 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 378 predicate places. [2024-06-27 23:42:55,361 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 380 transitions, 3837 flow [2024-06-27 23:42:55,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:55,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:42:55,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:42:55,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-27 23:42:55,361 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:42:55,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:42:55,362 INFO L85 PathProgramCache]: Analyzing trace with hash 775376160, now seen corresponding path program 18 times [2024-06-27 23:42:55,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:42:55,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097967529] [2024-06-27 23:42:55,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:42:55,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:42:55,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:42:56,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:42:56,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:42:56,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097967529] [2024-06-27 23:42:56,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097967529] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:42:56,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:42:56,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:42:56,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969093687] [2024-06-27 23:42:56,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:42:56,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:42:56,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:42:56,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:42:56,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:42:57,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:42:57,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 380 transitions, 3837 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:57,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:42:57,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:42:57,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:42:57,538 INFO L124 PetriNetUnfolderBase]: 669/1208 cut-off events. [2024-06-27 23:42:57,539 INFO L125 PetriNetUnfolderBase]: For 422691/422691 co-relation queries the response was YES. [2024-06-27 23:42:57,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11758 conditions, 1208 events. 669/1208 cut-off events. For 422691/422691 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 6464 event pairs, 57 based on Foata normal form. 1/1208 useless extension candidates. Maximal degree in co-relation 11561. Up to 1039 conditions per place. [2024-06-27 23:42:57,555 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 350 selfloop transitions, 49 changer transitions 0/402 dead transitions. [2024-06-27 23:42:57,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 402 transitions, 5139 flow [2024-06-27 23:42:57,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:42:57,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:42:57,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-27 23:42:57,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39118457300275483 [2024-06-27 23:42:57,556 INFO L175 Difference]: Start difference. First operand has 410 places, 380 transitions, 3837 flow. Second operand 11 states and 142 transitions. [2024-06-27 23:42:57,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 402 transitions, 5139 flow [2024-06-27 23:42:59,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 402 transitions, 5006 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-27 23:42:59,225 INFO L231 Difference]: Finished difference. Result has 412 places, 384 transitions, 3943 flow [2024-06-27 23:42:59,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3704, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3943, PETRI_PLACES=412, PETRI_TRANSITIONS=384} [2024-06-27 23:42:59,229 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 380 predicate places. [2024-06-27 23:42:59,229 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 384 transitions, 3943 flow [2024-06-27 23:42:59,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:42:59,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:42:59,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:42:59,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-27 23:42:59,230 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:42:59,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:42:59,231 INFO L85 PathProgramCache]: Analyzing trace with hash 775948327, now seen corresponding path program 21 times [2024-06-27 23:42:59,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:42:59,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145312744] [2024-06-27 23:42:59,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:42:59,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:42:59,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:43:00,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:43:00,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:43:00,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145312744] [2024-06-27 23:43:00,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145312744] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:43:00,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:43:00,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:43:00,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747333791] [2024-06-27 23:43:00,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:43:00,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:43:00,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:43:00,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:43:00,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:43:00,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:43:00,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 384 transitions, 3943 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:00,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:43:00,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:43:00,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:43:00,776 INFO L124 PetriNetUnfolderBase]: 672/1210 cut-off events. [2024-06-27 23:43:00,776 INFO L125 PetriNetUnfolderBase]: For 427813/427813 co-relation queries the response was YES. [2024-06-27 23:43:00,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11800 conditions, 1210 events. 672/1210 cut-off events. For 427813/427813 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 6464 event pairs, 62 based on Foata normal form. 1/1206 useless extension candidates. Maximal degree in co-relation 11602. Up to 1089 conditions per place. [2024-06-27 23:43:00,792 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 367 selfloop transitions, 33 changer transitions 0/403 dead transitions. [2024-06-27 23:43:00,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 403 transitions, 4827 flow [2024-06-27 23:43:00,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:43:00,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:43:00,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-27 23:43:00,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3746556473829201 [2024-06-27 23:43:00,794 INFO L175 Difference]: Start difference. First operand has 412 places, 384 transitions, 3943 flow. Second operand 11 states and 136 transitions. [2024-06-27 23:43:00,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 403 transitions, 4827 flow [2024-06-27 23:43:02,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 403 transitions, 4703 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-27 23:43:02,560 INFO L231 Difference]: Finished difference. Result has 416 places, 386 transitions, 3934 flow [2024-06-27 23:43:02,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3819, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3934, PETRI_PLACES=416, PETRI_TRANSITIONS=386} [2024-06-27 23:43:02,560 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 384 predicate places. [2024-06-27 23:43:02,560 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 386 transitions, 3934 flow [2024-06-27 23:43:02,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:02,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:43:02,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:43:02,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-27 23:43:02,561 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:43:02,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:43:02,561 INFO L85 PathProgramCache]: Analyzing trace with hash 775941600, now seen corresponding path program 19 times [2024-06-27 23:43:02,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:43:02,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002847318] [2024-06-27 23:43:02,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:43:02,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:43:02,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:43:03,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:43:03,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:43:03,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002847318] [2024-06-27 23:43:03,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002847318] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:43:03,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:43:03,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:43:03,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803919617] [2024-06-27 23:43:03,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:43:03,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:43:03,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:43:03,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:43:03,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:43:03,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:43:03,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 386 transitions, 3934 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:03,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:43:03,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:43:03,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:43:04,422 INFO L124 PetriNetUnfolderBase]: 670/1209 cut-off events. [2024-06-27 23:43:04,423 INFO L125 PetriNetUnfolderBase]: For 418827/418827 co-relation queries the response was YES. [2024-06-27 23:43:04,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11615 conditions, 1209 events. 670/1209 cut-off events. For 418827/418827 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 6481 event pairs, 59 based on Foata normal form. 1/1208 useless extension candidates. Maximal degree in co-relation 11415. Up to 1048 conditions per place. [2024-06-27 23:43:04,437 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 352 selfloop transitions, 48 changer transitions 0/403 dead transitions. [2024-06-27 23:43:04,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 403 transitions, 4778 flow [2024-06-27 23:43:04,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:43:04,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:43:04,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-27 23:43:04,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3856749311294766 [2024-06-27 23:43:04,438 INFO L175 Difference]: Start difference. First operand has 416 places, 386 transitions, 3934 flow. Second operand 11 states and 140 transitions. [2024-06-27 23:43:04,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 403 transitions, 4778 flow [2024-06-27 23:43:06,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 403 transitions, 4643 flow, removed 36 selfloop flow, removed 9 redundant places. [2024-06-27 23:43:06,290 INFO L231 Difference]: Finished difference. Result has 418 places, 386 transitions, 3900 flow [2024-06-27 23:43:06,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3799, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3900, PETRI_PLACES=418, PETRI_TRANSITIONS=386} [2024-06-27 23:43:06,291 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 386 predicate places. [2024-06-27 23:43:06,291 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 386 transitions, 3900 flow [2024-06-27 23:43:06,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:06,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:43:06,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:43:06,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-27 23:43:06,292 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:43:06,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:43:06,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1293386214, now seen corresponding path program 20 times [2024-06-27 23:43:06,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:43:06,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087072735] [2024-06-27 23:43:06,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:43:06,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:43:06,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:43:07,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:43:07,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:43:07,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087072735] [2024-06-27 23:43:07,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087072735] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:43:07,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:43:07,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:43:07,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058848112] [2024-06-27 23:43:07,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:43:07,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:43:07,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:43:07,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:43:07,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:43:07,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:43:07,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 386 transitions, 3900 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:07,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:43:07,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:43:07,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:43:08,291 INFO L124 PetriNetUnfolderBase]: 673/1217 cut-off events. [2024-06-27 23:43:08,292 INFO L125 PetriNetUnfolderBase]: For 424017/424017 co-relation queries the response was YES. [2024-06-27 23:43:08,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11687 conditions, 1217 events. 673/1217 cut-off events. For 424017/424017 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 6525 event pairs, 65 based on Foata normal form. 1/1217 useless extension candidates. Maximal degree in co-relation 11486. Up to 1068 conditions per place. [2024-06-27 23:43:08,309 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 365 selfloop transitions, 37 changer transitions 0/405 dead transitions. [2024-06-27 23:43:08,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 405 transitions, 4820 flow [2024-06-27 23:43:08,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:43:08,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:43:08,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-27 23:43:08,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38292011019283745 [2024-06-27 23:43:08,310 INFO L175 Difference]: Start difference. First operand has 418 places, 386 transitions, 3900 flow. Second operand 11 states and 139 transitions. [2024-06-27 23:43:08,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 405 transitions, 4820 flow [2024-06-27 23:43:10,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 405 transitions, 4719 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-27 23:43:10,378 INFO L231 Difference]: Finished difference. Result has 419 places, 388 transitions, 3952 flow [2024-06-27 23:43:10,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3799, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3952, PETRI_PLACES=419, PETRI_TRANSITIONS=388} [2024-06-27 23:43:10,379 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 387 predicate places. [2024-06-27 23:43:10,379 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 388 transitions, 3952 flow [2024-06-27 23:43:10,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:10,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:43:10,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:43:10,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-27 23:43:10,379 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:43:10,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:43:10,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1179058683, now seen corresponding path program 22 times [2024-06-27 23:43:10,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:43:10,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040163686] [2024-06-27 23:43:10,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:43:10,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:43:10,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:43:11,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:43:11,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:43:11,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040163686] [2024-06-27 23:43:11,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040163686] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:43:11,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:43:11,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:43:11,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78872063] [2024-06-27 23:43:11,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:43:11,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:43:11,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:43:11,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:43:11,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:43:11,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:43:11,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 388 transitions, 3952 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:11,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:43:11,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:43:11,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:43:12,069 INFO L124 PetriNetUnfolderBase]: 676/1219 cut-off events. [2024-06-27 23:43:12,070 INFO L125 PetriNetUnfolderBase]: For 429380/429380 co-relation queries the response was YES. [2024-06-27 23:43:12,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11743 conditions, 1219 events. 676/1219 cut-off events. For 429380/429380 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 6544 event pairs, 64 based on Foata normal form. 1/1215 useless extension candidates. Maximal degree in co-relation 11541. Up to 1096 conditions per place. [2024-06-27 23:43:12,087 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 373 selfloop transitions, 30 changer transitions 0/406 dead transitions. [2024-06-27 23:43:12,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 406 transitions, 4844 flow [2024-06-27 23:43:12,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:43:12,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:43:12,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-27 23:43:12,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39090909090909093 [2024-06-27 23:43:12,089 INFO L175 Difference]: Start difference. First operand has 419 places, 388 transitions, 3952 flow. Second operand 10 states and 129 transitions. [2024-06-27 23:43:12,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 406 transitions, 4844 flow [2024-06-27 23:43:14,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 406 transitions, 4713 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-06-27 23:43:14,233 INFO L231 Difference]: Finished difference. Result has 420 places, 390 transitions, 3934 flow [2024-06-27 23:43:14,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3821, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3934, PETRI_PLACES=420, PETRI_TRANSITIONS=390} [2024-06-27 23:43:14,234 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 388 predicate places. [2024-06-27 23:43:14,234 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 390 transitions, 3934 flow [2024-06-27 23:43:14,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:14,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:43:14,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:43:14,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-27 23:43:14,234 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:43:14,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:43:14,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1177904394, now seen corresponding path program 21 times [2024-06-27 23:43:14,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:43:14,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446917111] [2024-06-27 23:43:14,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:43:14,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:43:14,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:43:15,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:43:15,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:43:15,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446917111] [2024-06-27 23:43:15,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446917111] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:43:15,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:43:15,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:43:15,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088867914] [2024-06-27 23:43:15,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:43:15,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:43:15,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:43:15,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:43:15,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:43:15,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:43:15,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 390 transitions, 3934 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:15,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:43:15,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:43:15,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:43:16,255 INFO L124 PetriNetUnfolderBase]: 684/1237 cut-off events. [2024-06-27 23:43:16,256 INFO L125 PetriNetUnfolderBase]: For 449254/449254 co-relation queries the response was YES. [2024-06-27 23:43:16,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12081 conditions, 1237 events. 684/1237 cut-off events. For 449254/449254 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 6680 event pairs, 63 based on Foata normal form. 1/1237 useless extension candidates. Maximal degree in co-relation 11879. Up to 1070 conditions per place. [2024-06-27 23:43:16,273 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 363 selfloop transitions, 45 changer transitions 0/411 dead transitions. [2024-06-27 23:43:16,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 411 transitions, 5278 flow [2024-06-27 23:43:16,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:43:16,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:43:16,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-27 23:43:16,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39118457300275483 [2024-06-27 23:43:16,274 INFO L175 Difference]: Start difference. First operand has 420 places, 390 transitions, 3934 flow. Second operand 11 states and 142 transitions. [2024-06-27 23:43:16,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 411 transitions, 5278 flow [2024-06-27 23:43:18,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 411 transitions, 5189 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-27 23:43:18,186 INFO L231 Difference]: Finished difference. Result has 423 places, 394 transitions, 4092 flow [2024-06-27 23:43:18,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3845, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4092, PETRI_PLACES=423, PETRI_TRANSITIONS=394} [2024-06-27 23:43:18,186 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 391 predicate places. [2024-06-27 23:43:18,186 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 394 transitions, 4092 flow [2024-06-27 23:43:18,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:18,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:43:18,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:43:18,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-27 23:43:18,187 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:43:18,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:43:18,187 INFO L85 PathProgramCache]: Analyzing trace with hash 912854844, now seen corresponding path program 22 times [2024-06-27 23:43:18,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:43:18,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820586397] [2024-06-27 23:43:18,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:43:18,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:43:18,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:43:19,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:43:19,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:43:19,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820586397] [2024-06-27 23:43:19,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820586397] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:43:19,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:43:19,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:43:19,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364556008] [2024-06-27 23:43:19,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:43:19,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:43:19,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:43:19,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:43:19,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:43:19,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:43:19,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 394 transitions, 4092 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:19,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:43:19,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:43:19,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:43:20,647 INFO L124 PetriNetUnfolderBase]: 682/1234 cut-off events. [2024-06-27 23:43:20,647 INFO L125 PetriNetUnfolderBase]: For 440359/440359 co-relation queries the response was YES. [2024-06-27 23:43:20,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11913 conditions, 1234 events. 682/1234 cut-off events. For 440359/440359 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 6669 event pairs, 63 based on Foata normal form. 1/1234 useless extension candidates. Maximal degree in co-relation 11709. Up to 1068 conditions per place. [2024-06-27 23:43:20,664 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 363 selfloop transitions, 44 changer transitions 0/410 dead transitions. [2024-06-27 23:43:20,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 410 transitions, 4948 flow [2024-06-27 23:43:20,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:43:20,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:43:20,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-27 23:43:20,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39118457300275483 [2024-06-27 23:43:20,665 INFO L175 Difference]: Start difference. First operand has 423 places, 394 transitions, 4092 flow. Second operand 11 states and 142 transitions. [2024-06-27 23:43:20,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 410 transitions, 4948 flow [2024-06-27 23:43:22,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 410 transitions, 4777 flow, removed 61 selfloop flow, removed 7 redundant places. [2024-06-27 23:43:22,699 INFO L231 Difference]: Finished difference. Result has 427 places, 394 transitions, 4014 flow [2024-06-27 23:43:22,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3921, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4014, PETRI_PLACES=427, PETRI_TRANSITIONS=394} [2024-06-27 23:43:22,699 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 395 predicate places. [2024-06-27 23:43:22,699 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 394 transitions, 4014 flow [2024-06-27 23:43:22,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:22,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:43:22,700 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:43:22,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-27 23:43:22,700 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:43:22,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:43:22,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1023348070, now seen corresponding path program 23 times [2024-06-27 23:43:22,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:43:22,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170179878] [2024-06-27 23:43:22,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:43:22,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:43:22,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:43:24,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:43:24,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:43:24,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170179878] [2024-06-27 23:43:24,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170179878] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:43:24,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:43:24,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:43:24,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287737154] [2024-06-27 23:43:24,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:43:24,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:43:24,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:43:24,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:43:24,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:43:24,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:43:24,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 394 transitions, 4014 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:24,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:43:24,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:43:24,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:43:24,601 INFO L124 PetriNetUnfolderBase]: 685/1235 cut-off events. [2024-06-27 23:43:24,601 INFO L125 PetriNetUnfolderBase]: For 445182/445182 co-relation queries the response was YES. [2024-06-27 23:43:24,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11972 conditions, 1235 events. 685/1235 cut-off events. For 445182/445182 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 6684 event pairs, 54 based on Foata normal form. 1/1229 useless extension candidates. Maximal degree in co-relation 11766. Up to 1046 conditions per place. [2024-06-27 23:43:24,615 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 346 selfloop transitions, 62 changer transitions 0/411 dead transitions. [2024-06-27 23:43:24,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 411 transitions, 4946 flow [2024-06-27 23:43:24,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:43:24,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:43:24,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-27 23:43:24,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3884297520661157 [2024-06-27 23:43:24,616 INFO L175 Difference]: Start difference. First operand has 427 places, 394 transitions, 4014 flow. Second operand 11 states and 141 transitions. [2024-06-27 23:43:24,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 411 transitions, 4946 flow [2024-06-27 23:43:26,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 411 transitions, 4846 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 23:43:26,895 INFO L231 Difference]: Finished difference. Result has 428 places, 396 transitions, 4125 flow [2024-06-27 23:43:26,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3914, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4125, PETRI_PLACES=428, PETRI_TRANSITIONS=396} [2024-06-27 23:43:26,896 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 396 predicate places. [2024-06-27 23:43:26,896 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 396 transitions, 4125 flow [2024-06-27 23:43:26,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:26,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:43:26,896 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:43:26,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-27 23:43:26,897 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:43:26,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:43:26,897 INFO L85 PathProgramCache]: Analyzing trace with hash 2091617731, now seen corresponding path program 23 times [2024-06-27 23:43:26,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:43:26,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361600544] [2024-06-27 23:43:26,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:43:26,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:43:26,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:43:28,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:43:28,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:43:28,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361600544] [2024-06-27 23:43:28,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361600544] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:43:28,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:43:28,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:43:28,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982450759] [2024-06-27 23:43:28,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:43:28,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:43:28,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:43:28,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:43:28,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:43:28,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:43:28,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 396 transitions, 4125 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:28,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:43:28,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:43:28,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:43:28,573 INFO L124 PetriNetUnfolderBase]: 698/1253 cut-off events. [2024-06-27 23:43:28,573 INFO L125 PetriNetUnfolderBase]: For 480210/480210 co-relation queries the response was YES. [2024-06-27 23:43:28,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12579 conditions, 1253 events. 698/1253 cut-off events. For 480210/480210 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 6729 event pairs, 57 based on Foata normal form. 1/1245 useless extension candidates. Maximal degree in co-relation 12372. Up to 1094 conditions per place. [2024-06-27 23:43:28,590 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 367 selfloop transitions, 49 changer transitions 0/419 dead transitions. [2024-06-27 23:43:28,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 419 transitions, 5827 flow [2024-06-27 23:43:28,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:43:28,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:43:28,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-27 23:43:28,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3884297520661157 [2024-06-27 23:43:28,592 INFO L175 Difference]: Start difference. First operand has 428 places, 396 transitions, 4125 flow. Second operand 11 states and 141 transitions. [2024-06-27 23:43:28,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 419 transitions, 5827 flow [2024-06-27 23:43:30,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 419 transitions, 5638 flow, removed 34 selfloop flow, removed 9 redundant places. [2024-06-27 23:43:30,918 INFO L231 Difference]: Finished difference. Result has 430 places, 402 transitions, 4187 flow [2024-06-27 23:43:30,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3936, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4187, PETRI_PLACES=430, PETRI_TRANSITIONS=402} [2024-06-27 23:43:30,919 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 398 predicate places. [2024-06-27 23:43:30,919 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 402 transitions, 4187 flow [2024-06-27 23:43:30,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:30,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:43:30,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:43:30,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-27 23:43:30,919 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:43:30,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:43:30,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1012455910, now seen corresponding path program 24 times [2024-06-27 23:43:30,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:43:30,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494233091] [2024-06-27 23:43:30,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:43:30,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:43:30,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:43:32,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:43:32,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:43:32,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494233091] [2024-06-27 23:43:32,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494233091] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:43:32,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:43:32,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:43:32,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672235094] [2024-06-27 23:43:32,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:43:32,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:43:32,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:43:32,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:43:32,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:43:32,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:43:32,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 402 transitions, 4187 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:32,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:43:32,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:43:32,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:43:33,072 INFO L124 PetriNetUnfolderBase]: 706/1275 cut-off events. [2024-06-27 23:43:33,072 INFO L125 PetriNetUnfolderBase]: For 501513/501513 co-relation queries the response was YES. [2024-06-27 23:43:33,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12931 conditions, 1275 events. 706/1275 cut-off events. For 501513/501513 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 6912 event pairs, 53 based on Foata normal form. 1/1275 useless extension candidates. Maximal degree in co-relation 12723. Up to 1052 conditions per place. [2024-06-27 23:43:33,091 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 351 selfloop transitions, 68 changer transitions 0/422 dead transitions. [2024-06-27 23:43:33,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 422 transitions, 5573 flow [2024-06-27 23:43:33,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:43:33,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:43:33,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-27 23:43:33,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-27 23:43:33,093 INFO L175 Difference]: Start difference. First operand has 430 places, 402 transitions, 4187 flow. Second operand 11 states and 143 transitions. [2024-06-27 23:43:33,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 422 transitions, 5573 flow [2024-06-27 23:43:35,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 422 transitions, 5481 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-27 23:43:35,372 INFO L231 Difference]: Finished difference. Result has 435 places, 406 transitions, 4404 flow [2024-06-27 23:43:35,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4095, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4404, PETRI_PLACES=435, PETRI_TRANSITIONS=406} [2024-06-27 23:43:35,373 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 403 predicate places. [2024-06-27 23:43:35,373 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 406 transitions, 4404 flow [2024-06-27 23:43:35,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:35,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:43:35,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:43:35,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-27 23:43:35,374 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:43:35,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:43:35,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1012258533, now seen corresponding path program 24 times [2024-06-27 23:43:35,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:43:35,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510244590] [2024-06-27 23:43:35,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:43:35,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:43:35,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:43:36,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:43:36,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:43:36,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510244590] [2024-06-27 23:43:36,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510244590] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:43:36,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:43:36,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:43:36,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970701917] [2024-06-27 23:43:36,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:43:36,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:43:36,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:43:36,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:43:36,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:43:36,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:43:36,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 406 transitions, 4404 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:36,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:43:36,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:43:36,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:43:37,170 INFO L124 PetriNetUnfolderBase]: 704/1264 cut-off events. [2024-06-27 23:43:37,170 INFO L125 PetriNetUnfolderBase]: For 492276/492276 co-relation queries the response was YES. [2024-06-27 23:43:37,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12831 conditions, 1264 events. 704/1264 cut-off events. For 492276/492276 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 6810 event pairs, 57 based on Foata normal form. 1/1255 useless extension candidates. Maximal degree in co-relation 12621. Up to 1105 conditions per place. [2024-06-27 23:43:37,189 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 372 selfloop transitions, 47 changer transitions 0/422 dead transitions. [2024-06-27 23:43:37,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 422 transitions, 5628 flow [2024-06-27 23:43:37,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:43:37,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:43:37,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-27 23:43:37,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3884297520661157 [2024-06-27 23:43:37,191 INFO L175 Difference]: Start difference. First operand has 435 places, 406 transitions, 4404 flow. Second operand 11 states and 141 transitions. [2024-06-27 23:43:37,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 422 transitions, 5628 flow [2024-06-27 23:43:39,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 422 transitions, 5373 flow, removed 59 selfloop flow, removed 9 redundant places. [2024-06-27 23:43:39,380 INFO L231 Difference]: Finished difference. Result has 437 places, 406 transitions, 4248 flow [2024-06-27 23:43:39,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4149, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4248, PETRI_PLACES=437, PETRI_TRANSITIONS=406} [2024-06-27 23:43:39,381 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 405 predicate places. [2024-06-27 23:43:39,381 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 406 transitions, 4248 flow [2024-06-27 23:43:39,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:39,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:43:39,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:43:39,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-27 23:43:39,381 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:43:39,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:43:39,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1012265260, now seen corresponding path program 25 times [2024-06-27 23:43:39,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:43:39,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268901745] [2024-06-27 23:43:39,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:43:39,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:43:39,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:43:40,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:43:40,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:43:40,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268901745] [2024-06-27 23:43:40,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268901745] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:43:40,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:43:40,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:43:40,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078134078] [2024-06-27 23:43:40,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:43:40,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:43:40,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:43:40,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:43:40,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:43:40,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:43:40,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 406 transitions, 4248 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:40,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:43:40,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:43:40,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:43:41,432 INFO L124 PetriNetUnfolderBase]: 702/1263 cut-off events. [2024-06-27 23:43:41,432 INFO L125 PetriNetUnfolderBase]: For 481475/481475 co-relation queries the response was YES. [2024-06-27 23:43:41,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12466 conditions, 1263 events. 702/1263 cut-off events. For 481475/481475 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 6827 event pairs, 56 based on Foata normal form. 1/1257 useless extension candidates. Maximal degree in co-relation 12256. Up to 1074 conditions per place. [2024-06-27 23:43:41,450 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 361 selfloop transitions, 57 changer transitions 0/421 dead transitions. [2024-06-27 23:43:41,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 421 transitions, 5122 flow [2024-06-27 23:43:41,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:43:41,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:43:41,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-27 23:43:41,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3884297520661157 [2024-06-27 23:43:41,451 INFO L175 Difference]: Start difference. First operand has 437 places, 406 transitions, 4248 flow. Second operand 11 states and 141 transitions. [2024-06-27 23:43:41,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 421 transitions, 5122 flow [2024-06-27 23:43:43,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 421 transitions, 4957 flow, removed 29 selfloop flow, removed 10 redundant places. [2024-06-27 23:43:43,478 INFO L231 Difference]: Finished difference. Result has 438 places, 406 transitions, 4202 flow [2024-06-27 23:43:43,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4083, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4202, PETRI_PLACES=438, PETRI_TRANSITIONS=406} [2024-06-27 23:43:43,479 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 406 predicate places. [2024-06-27 23:43:43,479 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 406 transitions, 4202 flow [2024-06-27 23:43:43,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:43,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:43:43,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:43:43,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-27 23:43:43,480 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:43:43,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:43:43,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1005782943, now seen corresponding path program 25 times [2024-06-27 23:43:43,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:43:43,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33209475] [2024-06-27 23:43:43,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:43:43,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:43:43,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:43:44,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:43:44,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:43:44,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33209475] [2024-06-27 23:43:44,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33209475] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:43:44,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:43:44,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:43:44,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16012505] [2024-06-27 23:43:44,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:43:44,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:43:44,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:43:44,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:43:44,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:43:44,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:43:44,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 406 transitions, 4202 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:44,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:43:44,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:43:44,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:43:45,271 INFO L124 PetriNetUnfolderBase]: 700/1258 cut-off events. [2024-06-27 23:43:45,272 INFO L125 PetriNetUnfolderBase]: For 471117/471117 co-relation queries the response was YES. [2024-06-27 23:43:45,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12255 conditions, 1258 events. 700/1258 cut-off events. For 471117/471117 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 6794 event pairs, 57 based on Foata normal form. 1/1249 useless extension candidates. Maximal degree in co-relation 12044. Up to 1100 conditions per place. [2024-06-27 23:43:45,290 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 366 selfloop transitions, 52 changer transitions 0/421 dead transitions. [2024-06-27 23:43:45,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 421 transitions, 5076 flow [2024-06-27 23:43:45,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:43:45,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:43:45,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-27 23:43:45,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38016528925619836 [2024-06-27 23:43:45,291 INFO L175 Difference]: Start difference. First operand has 438 places, 406 transitions, 4202 flow. Second operand 11 states and 138 transitions. [2024-06-27 23:43:45,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 421 transitions, 5076 flow [2024-06-27 23:43:47,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 421 transitions, 4922 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-27 23:43:47,549 INFO L231 Difference]: Finished difference. Result has 439 places, 406 transitions, 4157 flow [2024-06-27 23:43:47,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4048, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4157, PETRI_PLACES=439, PETRI_TRANSITIONS=406} [2024-06-27 23:43:47,549 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 407 predicate places. [2024-06-27 23:43:47,549 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 406 transitions, 4157 flow [2024-06-27 23:43:47,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:47,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:43:47,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:43:47,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-27 23:43:47,550 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:43:47,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:43:47,550 INFO L85 PathProgramCache]: Analyzing trace with hash 2006656958, now seen corresponding path program 26 times [2024-06-27 23:43:47,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:43:47,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574101588] [2024-06-27 23:43:47,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:43:47,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:43:47,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:43:48,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:43:48,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:43:48,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574101588] [2024-06-27 23:43:48,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574101588] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:43:48,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:43:48,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:43:48,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823468551] [2024-06-27 23:43:48,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:43:48,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:43:48,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:43:48,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:43:48,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:43:48,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:43:48,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 406 transitions, 4157 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:48,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:43:48,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:43:48,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:43:49,474 INFO L124 PetriNetUnfolderBase]: 703/1272 cut-off events. [2024-06-27 23:43:49,474 INFO L125 PetriNetUnfolderBase]: For 476718/476718 co-relation queries the response was YES. [2024-06-27 23:43:49,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12333 conditions, 1272 events. 703/1272 cut-off events. For 476718/476718 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 6926 event pairs, 52 based on Foata normal form. 1/1272 useless extension candidates. Maximal degree in co-relation 12121. Up to 1118 conditions per place. [2024-06-27 23:43:49,493 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 385 selfloop transitions, 36 changer transitions 0/424 dead transitions. [2024-06-27 23:43:49,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 424 transitions, 5121 flow [2024-06-27 23:43:49,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:43:49,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:43:49,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-27 23:43:49,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38292011019283745 [2024-06-27 23:43:49,494 INFO L175 Difference]: Start difference. First operand has 439 places, 406 transitions, 4157 flow. Second operand 11 states and 139 transitions. [2024-06-27 23:43:49,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 424 transitions, 5121 flow [2024-06-27 23:43:51,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 424 transitions, 5014 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 23:43:51,805 INFO L231 Difference]: Finished difference. Result has 440 places, 408 transitions, 4209 flow [2024-06-27 23:43:51,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4050, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4209, PETRI_PLACES=440, PETRI_TRANSITIONS=408} [2024-06-27 23:43:51,806 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 408 predicate places. [2024-06-27 23:43:51,806 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 408 transitions, 4209 flow [2024-06-27 23:43:51,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:51,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:43:51,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:43:51,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-27 23:43:51,807 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:43:51,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:43:51,807 INFO L85 PathProgramCache]: Analyzing trace with hash 2010376028, now seen corresponding path program 27 times [2024-06-27 23:43:51,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:43:51,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695830045] [2024-06-27 23:43:51,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:43:51,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:43:51,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:43:53,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:43:53,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:43:53,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695830045] [2024-06-27 23:43:53,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695830045] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:43:53,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:43:53,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:43:53,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206755335] [2024-06-27 23:43:53,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:43:53,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:43:53,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:43:53,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:43:53,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:43:53,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:43:53,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 408 transitions, 4209 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:53,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:43:53,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:43:53,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:43:53,798 INFO L124 PetriNetUnfolderBase]: 711/1289 cut-off events. [2024-06-27 23:43:53,798 INFO L125 PetriNetUnfolderBase]: For 499507/499507 co-relation queries the response was YES. [2024-06-27 23:43:53,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12737 conditions, 1289 events. 711/1289 cut-off events. For 499507/499507 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 7008 event pairs, 52 based on Foata normal form. 1/1289 useless extension candidates. Maximal degree in co-relation 12524. Up to 1115 conditions per place. [2024-06-27 23:43:53,817 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 382 selfloop transitions, 43 changer transitions 0/428 dead transitions. [2024-06-27 23:43:53,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 428 transitions, 5619 flow [2024-06-27 23:43:53,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:43:53,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:43:53,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-27 23:43:53,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-27 23:43:53,819 INFO L175 Difference]: Start difference. First operand has 440 places, 408 transitions, 4209 flow. Second operand 11 states and 143 transitions. [2024-06-27 23:43:53,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 428 transitions, 5619 flow [2024-06-27 23:43:55,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 428 transitions, 5482 flow, removed 34 selfloop flow, removed 9 redundant places. [2024-06-27 23:43:55,956 INFO L231 Difference]: Finished difference. Result has 442 places, 412 transitions, 4331 flow [2024-06-27 23:43:55,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4072, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4331, PETRI_PLACES=442, PETRI_TRANSITIONS=412} [2024-06-27 23:43:55,957 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 410 predicate places. [2024-06-27 23:43:55,957 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 412 transitions, 4331 flow [2024-06-27 23:43:55,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:55,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:43:55,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:43:55,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-27 23:43:55,957 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:43:55,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:43:55,958 INFO L85 PathProgramCache]: Analyzing trace with hash 2010381825, now seen corresponding path program 26 times [2024-06-27 23:43:55,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:43:55,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168893677] [2024-06-27 23:43:55,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:43:55,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:43:55,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:43:57,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:43:57,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:43:57,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168893677] [2024-06-27 23:43:57,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168893677] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:43:57,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:43:57,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:43:57,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557286780] [2024-06-27 23:43:57,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:43:57,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:43:57,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:43:57,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:43:57,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:43:57,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:43:57,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 412 transitions, 4331 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:43:57,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:43:57,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:43:57,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:43:57,726 INFO L124 PetriNetUnfolderBase]: 714/1294 cut-off events. [2024-06-27 23:43:57,726 INFO L125 PetriNetUnfolderBase]: For 504945/504945 co-relation queries the response was YES. [2024-06-27 23:43:57,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12782 conditions, 1294 events. 714/1294 cut-off events. For 504945/504945 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 7053 event pairs, 50 based on Foata normal form. 1/1294 useless extension candidates. Maximal degree in co-relation 12568. Up to 1159 conditions per place. [2024-06-27 23:43:57,745 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 396 selfloop transitions, 30 changer transitions 0/429 dead transitions. [2024-06-27 23:43:57,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 429 transitions, 5275 flow [2024-06-27 23:43:57,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:43:57,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:43:57,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-27 23:43:57,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3746556473829201 [2024-06-27 23:43:57,747 INFO L175 Difference]: Start difference. First operand has 442 places, 412 transitions, 4331 flow. Second operand 11 states and 136 transitions. [2024-06-27 23:43:57,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 429 transitions, 5275 flow [2024-06-27 23:44:00,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 429 transitions, 5141 flow, removed 43 selfloop flow, removed 7 redundant places. [2024-06-27 23:44:00,119 INFO L231 Difference]: Finished difference. Result has 446 places, 414 transitions, 4318 flow [2024-06-27 23:44:00,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4197, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4318, PETRI_PLACES=446, PETRI_TRANSITIONS=414} [2024-06-27 23:44:00,119 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 414 predicate places. [2024-06-27 23:44:00,119 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 414 transitions, 4318 flow [2024-06-27 23:44:00,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:44:00,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:44:00,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:44:00,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-27 23:44:00,120 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:44:00,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:44:00,120 INFO L85 PathProgramCache]: Analyzing trace with hash 2010381608, now seen corresponding path program 28 times [2024-06-27 23:44:00,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:44:00,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269945937] [2024-06-27 23:44:00,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:44:00,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:44:00,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:44:01,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:44:01,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:44:01,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269945937] [2024-06-27 23:44:01,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269945937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:44:01,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:44:01,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:44:01,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744708142] [2024-06-27 23:44:01,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:44:01,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:44:01,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:44:01,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:44:01,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:44:01,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:44:01,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 414 transitions, 4318 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:44:01,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:44:01,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:44:01,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:44:02,185 INFO L124 PetriNetUnfolderBase]: 712/1291 cut-off events. [2024-06-27 23:44:02,185 INFO L125 PetriNetUnfolderBase]: For 493649/493649 co-relation queries the response was YES. [2024-06-27 23:44:02,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12555 conditions, 1291 events. 712/1291 cut-off events. For 493649/493649 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 7067 event pairs, 52 based on Foata normal form. 1/1291 useless extension candidates. Maximal degree in co-relation 12339. Up to 1118 conditions per place. [2024-06-27 23:44:02,204 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 382 selfloop transitions, 44 changer transitions 0/429 dead transitions. [2024-06-27 23:44:02,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 429 transitions, 5210 flow [2024-06-27 23:44:02,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:44:02,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:44:02,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-27 23:44:02,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3884297520661157 [2024-06-27 23:44:02,206 INFO L175 Difference]: Start difference. First operand has 446 places, 414 transitions, 4318 flow. Second operand 11 states and 141 transitions. [2024-06-27 23:44:02,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 429 transitions, 5210 flow [2024-06-27 23:44:04,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 429 transitions, 5057 flow, removed 48 selfloop flow, removed 9 redundant places. [2024-06-27 23:44:04,297 INFO L231 Difference]: Finished difference. Result has 448 places, 414 transitions, 4258 flow [2024-06-27 23:44:04,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4165, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4258, PETRI_PLACES=448, PETRI_TRANSITIONS=414} [2024-06-27 23:44:04,298 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 416 predicate places. [2024-06-27 23:44:04,298 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 414 transitions, 4258 flow [2024-06-27 23:44:04,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:44:04,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:44:04,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:44:04,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-27 23:44:04,298 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:44:04,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:44:04,299 INFO L85 PathProgramCache]: Analyzing trace with hash -2140694941, now seen corresponding path program 27 times [2024-06-27 23:44:04,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:44:04,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18496359] [2024-06-27 23:44:04,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:44:04,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:44:04,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:44:05,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:44:05,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:44:05,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18496359] [2024-06-27 23:44:05,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18496359] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:44:05,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:44:05,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:44:05,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118388960] [2024-06-27 23:44:05,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:44:05,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:44:05,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:44:05,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:44:05,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:44:05,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:44:05,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 414 transitions, 4258 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:44:05,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:44:05,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:44:05,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:44:06,029 INFO L124 PetriNetUnfolderBase]: 720/1304 cut-off events. [2024-06-27 23:44:06,029 INFO L125 PetriNetUnfolderBase]: For 515265/515265 co-relation queries the response was YES. [2024-06-27 23:44:06,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12850 conditions, 1304 events. 720/1304 cut-off events. For 515265/515265 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 7132 event pairs, 50 based on Foata normal form. 1/1304 useless extension candidates. Maximal degree in co-relation 12633. Up to 1142 conditions per place. [2024-06-27 23:44:06,049 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 390 selfloop transitions, 40 changer transitions 0/433 dead transitions. [2024-06-27 23:44:06,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 433 transitions, 5628 flow [2024-06-27 23:44:06,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:44:06,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:44:06,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-27 23:44:06,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39118457300275483 [2024-06-27 23:44:06,050 INFO L175 Difference]: Start difference. First operand has 448 places, 414 transitions, 4258 flow. Second operand 11 states and 142 transitions. [2024-06-27 23:44:06,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 433 transitions, 5628 flow [2024-06-27 23:44:08,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 433 transitions, 5535 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-27 23:44:08,173 INFO L231 Difference]: Finished difference. Result has 449 places, 418 transitions, 4366 flow [2024-06-27 23:44:08,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4165, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4366, PETRI_PLACES=449, PETRI_TRANSITIONS=418} [2024-06-27 23:44:08,174 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 417 predicate places. [2024-06-27 23:44:08,174 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 418 transitions, 4366 flow [2024-06-27 23:44:08,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:44:08,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:44:08,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:44:08,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-27 23:44:08,174 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:44:08,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:44:08,175 INFO L85 PathProgramCache]: Analyzing trace with hash -2140695158, now seen corresponding path program 29 times [2024-06-27 23:44:08,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:44:08,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567425073] [2024-06-27 23:44:08,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:44:08,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:44:08,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:44:09,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:44:09,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:44:09,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567425073] [2024-06-27 23:44:09,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567425073] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:44:09,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:44:09,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:44:09,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220162147] [2024-06-27 23:44:09,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:44:09,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:44:09,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:44:09,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:44:09,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:44:09,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:44:09,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 418 transitions, 4366 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:44:09,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:44:09,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:44:09,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:44:10,326 INFO L124 PetriNetUnfolderBase]: 733/1329 cut-off events. [2024-06-27 23:44:10,326 INFO L125 PetriNetUnfolderBase]: For 556209/556209 co-relation queries the response was YES. [2024-06-27 23:44:10,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13609 conditions, 1329 events. 733/1329 cut-off events. For 556209/556209 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 7321 event pairs, 52 based on Foata normal form. 1/1329 useless extension candidates. Maximal degree in co-relation 13391. Up to 1123 conditions per place. [2024-06-27 23:44:10,343 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 383 selfloop transitions, 54 changer transitions 0/440 dead transitions. [2024-06-27 23:44:10,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 440 transitions, 6262 flow [2024-06-27 23:44:10,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:44:10,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:44:10,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-27 23:44:10,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4049586776859504 [2024-06-27 23:44:10,344 INFO L175 Difference]: Start difference. First operand has 449 places, 418 transitions, 4366 flow. Second operand 11 states and 147 transitions. [2024-06-27 23:44:10,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 440 transitions, 6262 flow [2024-06-27 23:44:12,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 440 transitions, 6163 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-27 23:44:12,669 INFO L231 Difference]: Finished difference. Result has 453 places, 424 transitions, 4642 flow [2024-06-27 23:44:12,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4267, PETRI_DIFFERENCE_MINUEND_PLACES=442, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4642, PETRI_PLACES=453, PETRI_TRANSITIONS=424} [2024-06-27 23:44:12,670 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 421 predicate places. [2024-06-27 23:44:12,670 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 424 transitions, 4642 flow [2024-06-27 23:44:12,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:44:12,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:44:12,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:44:12,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-27 23:44:12,670 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:44:12,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:44:12,671 INFO L85 PathProgramCache]: Analyzing trace with hash -2140700738, now seen corresponding path program 30 times [2024-06-27 23:44:12,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:44:12,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033135391] [2024-06-27 23:44:12,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:44:12,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:44:12,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:44:14,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:44:14,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:44:14,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033135391] [2024-06-27 23:44:14,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033135391] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:44:14,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:44:14,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:44:14,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938200284] [2024-06-27 23:44:14,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:44:14,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:44:14,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:44:14,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:44:14,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:44:14,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:44:14,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 424 transitions, 4642 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:44:14,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:44:14,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:44:14,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:44:14,995 INFO L124 PetriNetUnfolderBase]: 731/1326 cut-off events. [2024-06-27 23:44:14,995 INFO L125 PetriNetUnfolderBase]: For 545676/545676 co-relation queries the response was YES. [2024-06-27 23:44:15,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13456 conditions, 1326 events. 731/1326 cut-off events. For 545676/545676 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 7326 event pairs, 52 based on Foata normal form. 1/1326 useless extension candidates. Maximal degree in co-relation 13236. Up to 1121 conditions per place. [2024-06-27 23:44:15,015 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 381 selfloop transitions, 55 changer transitions 0/439 dead transitions. [2024-06-27 23:44:15,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 439 transitions, 5916 flow [2024-06-27 23:44:15,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:44:15,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:44:15,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-27 23:44:15,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39944903581267216 [2024-06-27 23:44:15,016 INFO L175 Difference]: Start difference. First operand has 453 places, 424 transitions, 4642 flow. Second operand 11 states and 145 transitions. [2024-06-27 23:44:15,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 439 transitions, 5916 flow [2024-06-27 23:44:17,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 439 transitions, 5664 flow, removed 85 selfloop flow, removed 7 redundant places. [2024-06-27 23:44:17,549 INFO L231 Difference]: Finished difference. Result has 457 places, 424 transitions, 4505 flow [2024-06-27 23:44:17,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4390, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4505, PETRI_PLACES=457, PETRI_TRANSITIONS=424} [2024-06-27 23:44:17,549 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 425 predicate places. [2024-06-27 23:44:17,549 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 424 transitions, 4505 flow [2024-06-27 23:44:17,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:44:17,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:44:17,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:44:17,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-27 23:44:17,550 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:44:17,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:44:17,551 INFO L85 PathProgramCache]: Analyzing trace with hash 373105423, now seen corresponding path program 28 times [2024-06-27 23:44:17,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:44:17,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544514505] [2024-06-27 23:44:17,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:44:17,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:44:17,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:44:18,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:44:18,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:44:18,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544514505] [2024-06-27 23:44:18,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544514505] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:44:18,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:44:18,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:44:18,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632478171] [2024-06-27 23:44:18,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:44:18,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:44:18,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:44:18,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:44:18,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:44:18,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:44:18,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 424 transitions, 4505 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:44:18,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:44:18,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:44:18,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:44:19,397 INFO L124 PetriNetUnfolderBase]: 734/1331 cut-off events. [2024-06-27 23:44:19,397 INFO L125 PetriNetUnfolderBase]: For 549826/549826 co-relation queries the response was YES. [2024-06-27 23:44:19,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13395 conditions, 1331 events. 734/1331 cut-off events. For 549826/549826 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 7334 event pairs, 50 based on Foata normal form. 1/1331 useless extension candidates. Maximal degree in co-relation 13174. Up to 1164 conditions per place. [2024-06-27 23:44:19,417 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 393 selfloop transitions, 45 changer transitions 0/441 dead transitions. [2024-06-27 23:44:19,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 441 transitions, 5833 flow [2024-06-27 23:44:19,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:44:19,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:44:19,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-27 23:44:19,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3856749311294766 [2024-06-27 23:44:19,418 INFO L175 Difference]: Start difference. First operand has 457 places, 424 transitions, 4505 flow. Second operand 11 states and 140 transitions. [2024-06-27 23:44:19,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 441 transitions, 5833 flow [2024-06-27 23:44:21,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 441 transitions, 5725 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-27 23:44:21,792 INFO L231 Difference]: Finished difference. Result has 459 places, 426 transitions, 4540 flow [2024-06-27 23:44:21,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4397, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4540, PETRI_PLACES=459, PETRI_TRANSITIONS=426} [2024-06-27 23:44:21,792 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 427 predicate places. [2024-06-27 23:44:21,792 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 426 transitions, 4540 flow [2024-06-27 23:44:21,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:44:21,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:44:21,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:44:21,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-27 23:44:21,793 INFO L420 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:44:21,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:44:21,793 INFO L85 PathProgramCache]: Analyzing trace with hash -2140493131, now seen corresponding path program 29 times [2024-06-27 23:44:21,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:44:21,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954035161] [2024-06-27 23:44:21,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:44:21,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:44:21,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:44:22,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:44:22,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:44:22,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954035161] [2024-06-27 23:44:22,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954035161] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:44:22,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:44:22,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:44:22,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739665693] [2024-06-27 23:44:22,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:44:22,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:44:22,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:44:22,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:44:22,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:44:23,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:44:23,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 426 transitions, 4540 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:44:23,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:44:23,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:44:23,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:44:23,596 INFO L124 PetriNetUnfolderBase]: 732/1328 cut-off events. [2024-06-27 23:44:23,596 INFO L125 PetriNetUnfolderBase]: For 538834/538834 co-relation queries the response was YES. [2024-06-27 23:44:23,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13199 conditions, 1328 events. 732/1328 cut-off events. For 538834/538834 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 7304 event pairs, 50 based on Foata normal form. 1/1328 useless extension candidates. Maximal degree in co-relation 12977. Up to 1162 conditions per place. [2024-06-27 23:44:23,617 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 394 selfloop transitions, 43 changer transitions 0/440 dead transitions. [2024-06-27 23:44:23,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 440 transitions, 5450 flow [2024-06-27 23:44:23,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:44:23,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:44:23,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-27 23:44:23,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3856749311294766 [2024-06-27 23:44:23,618 INFO L175 Difference]: Start difference. First operand has 459 places, 426 transitions, 4540 flow. Second operand 11 states and 140 transitions. [2024-06-27 23:44:23,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 440 transitions, 5450 flow [2024-06-27 23:44:26,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 440 transitions, 5311 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-06-27 23:44:26,191 INFO L231 Difference]: Finished difference. Result has 462 places, 426 transitions, 4492 flow [2024-06-27 23:44:26,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4401, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4492, PETRI_PLACES=462, PETRI_TRANSITIONS=426} [2024-06-27 23:44:26,191 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 430 predicate places. [2024-06-27 23:44:26,191 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 426 transitions, 4492 flow [2024-06-27 23:44:26,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:44:26,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:44:26,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:44:26,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-27 23:44:26,192 INFO L420 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:44:26,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:44:26,192 INFO L85 PathProgramCache]: Analyzing trace with hash 957126806, now seen corresponding path program 31 times [2024-06-27 23:44:26,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:44:26,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015492213] [2024-06-27 23:44:26,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:44:26,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:44:26,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:44:27,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:44:27,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:44:27,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015492213] [2024-06-27 23:44:27,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015492213] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:44:27,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:44:27,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:44:27,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971199348] [2024-06-27 23:44:27,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:44:27,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:44:27,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:44:27,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:44:27,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:44:27,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:44:27,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 426 transitions, 4492 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:44:27,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:44:27,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:44:27,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:44:28,130 INFO L124 PetriNetUnfolderBase]: 730/1325 cut-off events. [2024-06-27 23:44:28,130 INFO L125 PetriNetUnfolderBase]: For 527206/527206 co-relation queries the response was YES. [2024-06-27 23:44:28,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12953 conditions, 1325 events. 730/1325 cut-off events. For 527206/527206 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 7317 event pairs, 52 based on Foata normal form. 1/1325 useless extension candidates. Maximal degree in co-relation 12730. Up to 1121 conditions per place. [2024-06-27 23:44:28,149 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 380 selfloop transitions, 57 changer transitions 0/440 dead transitions. [2024-06-27 23:44:28,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 440 transitions, 5402 flow [2024-06-27 23:44:28,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:44:28,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:44:28,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-27 23:44:28,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-27 23:44:28,151 INFO L175 Difference]: Start difference. First operand has 462 places, 426 transitions, 4492 flow. Second operand 11 states and 143 transitions. [2024-06-27 23:44:28,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 440 transitions, 5402 flow [2024-06-27 23:44:30,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 440 transitions, 5241 flow, removed 28 selfloop flow, removed 11 redundant places. [2024-06-27 23:44:30,675 INFO L231 Difference]: Finished difference. Result has 462 places, 426 transitions, 4450 flow [2024-06-27 23:44:30,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4331, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4450, PETRI_PLACES=462, PETRI_TRANSITIONS=426} [2024-06-27 23:44:30,675 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 430 predicate places. [2024-06-27 23:44:30,676 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 426 transitions, 4450 flow [2024-06-27 23:44:30,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:44:30,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:44:30,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:44:30,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-27 23:44:30,676 INFO L420 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:44:30,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:44:30,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1088266397, now seen corresponding path program 30 times [2024-06-27 23:44:30,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:44:30,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603873174] [2024-06-27 23:44:30,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:44:30,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:44:30,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:44:31,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:44:31,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:44:31,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603873174] [2024-06-27 23:44:31,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603873174] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:44:31,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:44:31,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:44:31,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700859715] [2024-06-27 23:44:31,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:44:31,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:44:31,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:44:31,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:44:31,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:44:32,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:44:32,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 426 transitions, 4450 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:44:32,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:44:32,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:44:32,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:44:32,512 INFO L124 PetriNetUnfolderBase]: 738/1338 cut-off events. [2024-06-27 23:44:32,513 INFO L125 PetriNetUnfolderBase]: For 550447/550447 co-relation queries the response was YES. [2024-06-27 23:44:32,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13290 conditions, 1338 events. 738/1338 cut-off events. For 550447/550447 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 7398 event pairs, 54 based on Foata normal form. 1/1338 useless extension candidates. Maximal degree in co-relation 13066. Up to 1071 conditions per place. [2024-06-27 23:44:32,533 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 365 selfloop transitions, 77 changer transitions 0/445 dead transitions. [2024-06-27 23:44:32,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 445 transitions, 6234 flow [2024-06-27 23:44:32,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:44:32,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:44:32,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-27 23:44:32,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39944903581267216 [2024-06-27 23:44:32,535 INFO L175 Difference]: Start difference. First operand has 462 places, 426 transitions, 4450 flow. Second operand 11 states and 145 transitions. [2024-06-27 23:44:32,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 445 transitions, 6234 flow [2024-06-27 23:44:35,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 445 transitions, 6104 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-27 23:44:35,085 INFO L231 Difference]: Finished difference. Result has 462 places, 430 transitions, 4599 flow [2024-06-27 23:44:35,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4320, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4599, PETRI_PLACES=462, PETRI_TRANSITIONS=430} [2024-06-27 23:44:35,085 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 430 predicate places. [2024-06-27 23:44:35,086 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 430 transitions, 4599 flow [2024-06-27 23:44:35,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:44:35,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:44:35,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:44:35,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-27 23:44:35,086 INFO L420 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:44:35,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:44:35,086 INFO L85 PathProgramCache]: Analyzing trace with hash 567037393, now seen corresponding path program 31 times [2024-06-27 23:44:35,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:44:35,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721546780] [2024-06-27 23:44:35,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:44:35,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:44:35,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:44:36,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:44:36,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:44:36,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721546780] [2024-06-27 23:44:36,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721546780] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:44:36,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:44:36,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:44:36,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209298893] [2024-06-27 23:44:36,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:44:36,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:44:36,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:44:36,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:44:36,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:44:36,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:44:36,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 430 transitions, 4599 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:44:36,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:44:36,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:44:36,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:44:37,018 INFO L124 PetriNetUnfolderBase]: 741/1343 cut-off events. [2024-06-27 23:44:37,018 INFO L125 PetriNetUnfolderBase]: For 556827/556827 co-relation queries the response was YES. [2024-06-27 23:44:37,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13425 conditions, 1343 events. 741/1343 cut-off events. For 556827/556827 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 7434 event pairs, 54 based on Foata normal form. 1/1343 useless extension candidates. Maximal degree in co-relation 13200. Up to 1075 conditions per place. [2024-06-27 23:44:37,039 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 366 selfloop transitions, 78 changer transitions 0/447 dead transitions. [2024-06-27 23:44:37,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 447 transitions, 6335 flow [2024-06-27 23:44:37,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:44:37,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:44:37,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-27 23:44:37,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4022038567493113 [2024-06-27 23:44:37,040 INFO L175 Difference]: Start difference. First operand has 462 places, 430 transitions, 4599 flow. Second operand 11 states and 146 transitions. [2024-06-27 23:44:37,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 447 transitions, 6335 flow [2024-06-27 23:44:39,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 447 transitions, 5908 flow, removed 45 selfloop flow, removed 11 redundant places. [2024-06-27 23:44:39,857 INFO L231 Difference]: Finished difference. Result has 462 places, 432 transitions, 4397 flow [2024-06-27 23:44:39,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4190, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4397, PETRI_PLACES=462, PETRI_TRANSITIONS=432} [2024-06-27 23:44:39,858 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 430 predicate places. [2024-06-27 23:44:39,858 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 432 transitions, 4397 flow [2024-06-27 23:44:39,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:44:39,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:44:39,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:44:39,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-27 23:44:39,858 INFO L420 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:44:39,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:44:39,861 INFO L85 PathProgramCache]: Analyzing trace with hash 574454143, now seen corresponding path program 32 times [2024-06-27 23:44:39,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:44:39,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679502375] [2024-06-27 23:44:39,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:44:39,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:44:39,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:44:41,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:44:41,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:44:41,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679502375] [2024-06-27 23:44:41,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679502375] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:44:41,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:44:41,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:44:41,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536245324] [2024-06-27 23:44:41,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:44:41,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:44:41,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:44:41,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:44:41,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:44:41,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:44:41,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 432 transitions, 4397 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:44:41,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:44:41,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:44:41,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:44:41,764 INFO L124 PetriNetUnfolderBase]: 744/1348 cut-off events. [2024-06-27 23:44:41,765 INFO L125 PetriNetUnfolderBase]: For 561637/561637 co-relation queries the response was YES. [2024-06-27 23:44:41,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13180 conditions, 1348 events. 744/1348 cut-off events. For 561637/561637 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 7457 event pairs, 54 based on Foata normal form. 1/1348 useless extension candidates. Maximal degree in co-relation 12957. Up to 1079 conditions per place. [2024-06-27 23:44:41,785 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 346 selfloop transitions, 99 changer transitions 0/448 dead transitions. [2024-06-27 23:44:41,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 448 transitions, 5747 flow [2024-06-27 23:44:41,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:44:41,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:44:41,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-27 23:44:41,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3884297520661157 [2024-06-27 23:44:41,787 INFO L175 Difference]: Start difference. First operand has 462 places, 432 transitions, 4397 flow. Second operand 11 states and 141 transitions. [2024-06-27 23:44:41,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 448 transitions, 5747 flow [2024-06-27 23:44:44,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 448 transitions, 5564 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-27 23:44:44,382 INFO L231 Difference]: Finished difference. Result has 465 places, 434 transitions, 4467 flow [2024-06-27 23:44:44,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4218, PETRI_DIFFERENCE_MINUEND_PLACES=454, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4467, PETRI_PLACES=465, PETRI_TRANSITIONS=434} [2024-06-27 23:44:44,383 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 433 predicate places. [2024-06-27 23:44:44,383 INFO L495 AbstractCegarLoop]: Abstraction has has 465 places, 434 transitions, 4467 flow [2024-06-27 23:44:44,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:44:44,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:44:44,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:44:44,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-27 23:44:44,383 INFO L420 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:44:44,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:44:44,384 INFO L85 PathProgramCache]: Analyzing trace with hash 574187233, now seen corresponding path program 33 times [2024-06-27 23:44:44,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:44:44,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213040548] [2024-06-27 23:44:44,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:44:44,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:44:44,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:44:45,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:44:45,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:44:45,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213040548] [2024-06-27 23:44:45,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213040548] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:44:45,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:44:45,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:44:45,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74967403] [2024-06-27 23:44:45,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:44:45,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:44:45,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:44:45,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:44:45,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:44:45,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:44:45,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 434 transitions, 4467 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:44:45,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:44:45,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:44:45,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:44:46,352 INFO L124 PetriNetUnfolderBase]: 747/1353 cut-off events. [2024-06-27 23:44:46,352 INFO L125 PetriNetUnfolderBase]: For 567612/567612 co-relation queries the response was YES. [2024-06-27 23:44:46,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13278 conditions, 1353 events. 747/1353 cut-off events. For 567612/567612 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 7481 event pairs, 54 based on Foata normal form. 1/1353 useless extension candidates. Maximal degree in co-relation 13054. Up to 1083 conditions per place. [2024-06-27 23:44:46,374 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 358 selfloop transitions, 90 changer transitions 0/451 dead transitions. [2024-06-27 23:44:46,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 451 transitions, 6205 flow [2024-06-27 23:44:46,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:44:46,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:44:46,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-27 23:44:46,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-27 23:44:46,375 INFO L175 Difference]: Start difference. First operand has 465 places, 434 transitions, 4467 flow. Second operand 11 states and 143 transitions. [2024-06-27 23:44:46,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 451 transitions, 6205 flow [2024-06-27 23:44:49,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 451 transitions, 5779 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-27 23:44:49,069 INFO L231 Difference]: Finished difference. Result has 466 places, 436 transitions, 4276 flow [2024-06-27 23:44:49,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4047, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4276, PETRI_PLACES=466, PETRI_TRANSITIONS=436} [2024-06-27 23:44:49,070 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 434 predicate places. [2024-06-27 23:44:49,070 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 436 transitions, 4276 flow [2024-06-27 23:44:49,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:44:49,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:44:49,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:44:49,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-27 23:44:49,071 INFO L420 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:44:49,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:44:49,071 INFO L85 PathProgramCache]: Analyzing trace with hash 567037176, now seen corresponding path program 32 times [2024-06-27 23:44:49,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:44:49,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563977409] [2024-06-27 23:44:49,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:44:49,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:44:49,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:44:50,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:44:50,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:44:50,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563977409] [2024-06-27 23:44:50,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563977409] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:44:50,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:44:50,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:44:50,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629416155] [2024-06-27 23:44:50,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:44:50,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:44:50,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:44:50,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:44:50,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:44:50,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:44:50,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 436 transitions, 4276 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:44:50,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:44:50,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:44:50,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:44:51,157 INFO L124 PetriNetUnfolderBase]: 755/1368 cut-off events. [2024-06-27 23:44:51,157 INFO L125 PetriNetUnfolderBase]: For 592676/592676 co-relation queries the response was YES. [2024-06-27 23:44:51,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13598 conditions, 1368 events. 755/1368 cut-off events. For 592676/592676 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 7604 event pairs, 58 based on Foata normal form. 1/1368 useless extension candidates. Maximal degree in co-relation 13373. Up to 1044 conditions per place. [2024-06-27 23:44:51,179 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 353 selfloop transitions, 99 changer transitions 0/455 dead transitions. [2024-06-27 23:44:51,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 455 transitions, 6148 flow [2024-06-27 23:44:51,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:44:51,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:44:51,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-27 23:44:51,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4049586776859504 [2024-06-27 23:44:51,180 INFO L175 Difference]: Start difference. First operand has 466 places, 436 transitions, 4276 flow. Second operand 11 states and 147 transitions. [2024-06-27 23:44:51,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 455 transitions, 6148 flow [2024-06-27 23:44:54,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 467 places, 455 transitions, 5929 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-27 23:44:54,276 INFO L231 Difference]: Finished difference. Result has 468 places, 440 transitions, 4432 flow [2024-06-27 23:44:54,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4057, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4432, PETRI_PLACES=468, PETRI_TRANSITIONS=440} [2024-06-27 23:44:54,276 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 436 predicate places. [2024-06-27 23:44:54,276 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 440 transitions, 4432 flow [2024-06-27 23:44:54,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:44:54,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:44:54,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:44:54,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-27 23:44:54,278 INFO L420 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:44:54,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:44:54,278 INFO L85 PathProgramCache]: Analyzing trace with hash 566829786, now seen corresponding path program 33 times [2024-06-27 23:44:54,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:44:54,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317975673] [2024-06-27 23:44:54,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:44:54,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:44:54,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:44:55,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:44:55,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:44:55,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317975673] [2024-06-27 23:44:55,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317975673] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:44:55,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:44:55,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:44:55,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451095566] [2024-06-27 23:44:55,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:44:55,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:44:55,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:44:55,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:44:55,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:44:55,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:44:55,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 440 transitions, 4432 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:44:55,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:44:55,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:44:55,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:44:56,417 INFO L124 PetriNetUnfolderBase]: 758/1375 cut-off events. [2024-06-27 23:44:56,417 INFO L125 PetriNetUnfolderBase]: For 600017/600017 co-relation queries the response was YES. [2024-06-27 23:44:56,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13714 conditions, 1375 events. 758/1375 cut-off events. For 600017/600017 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 7631 event pairs, 58 based on Foata normal form. 1/1375 useless extension candidates. Maximal degree in co-relation 13488. Up to 1048 conditions per place. [2024-06-27 23:44:56,435 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 349 selfloop transitions, 104 changer transitions 0/456 dead transitions. [2024-06-27 23:44:56,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 456 transitions, 5844 flow [2024-06-27 23:44:56,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:44:56,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:44:56,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-27 23:44:56,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39669421487603307 [2024-06-27 23:44:56,437 INFO L175 Difference]: Start difference. First operand has 468 places, 440 transitions, 4432 flow. Second operand 11 states and 144 transitions. [2024-06-27 23:44:56,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 456 transitions, 5844 flow [2024-06-27 23:44:59,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 467 places, 456 transitions, 5293 flow, removed 59 selfloop flow, removed 11 redundant places. [2024-06-27 23:44:59,422 INFO L231 Difference]: Finished difference. Result has 468 places, 442 transitions, 4184 flow [2024-06-27 23:44:59,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3899, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4184, PETRI_PLACES=468, PETRI_TRANSITIONS=442} [2024-06-27 23:44:59,422 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 436 predicate places. [2024-06-27 23:44:59,422 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 442 transitions, 4184 flow [2024-06-27 23:44:59,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:44:59,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:44:59,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:44:59,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-27 23:44:59,423 INFO L420 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:44:59,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:44:59,423 INFO L85 PathProgramCache]: Analyzing trace with hash 566835583, now seen corresponding path program 34 times [2024-06-27 23:44:59,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:44:59,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009980966] [2024-06-27 23:44:59,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:44:59,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:44:59,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:45:00,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:45:00,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:45:00,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009980966] [2024-06-27 23:45:00,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009980966] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:45:00,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:45:00,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:45:00,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285313215] [2024-06-27 23:45:00,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:45:00,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:45:00,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:45:00,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:45:00,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:45:00,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:45:00,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 442 transitions, 4184 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:45:00,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:45:00,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:45:00,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:45:01,445 INFO L124 PetriNetUnfolderBase]: 756/1372 cut-off events. [2024-06-27 23:45:01,445 INFO L125 PetriNetUnfolderBase]: For 585826/585826 co-relation queries the response was YES. [2024-06-27 23:45:01,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13104 conditions, 1372 events. 756/1372 cut-off events. For 585826/585826 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 7646 event pairs, 45 based on Foata normal form. 1/1372 useless extension candidates. Maximal degree in co-relation 12880. Up to 1099 conditions per place. [2024-06-27 23:45:01,465 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 368 selfloop transitions, 85 changer transitions 0/456 dead transitions. [2024-06-27 23:45:01,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 456 transitions, 5508 flow [2024-06-27 23:45:01,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:45:01,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:45:01,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-27 23:45:01,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-27 23:45:01,467 INFO L175 Difference]: Start difference. First operand has 468 places, 442 transitions, 4184 flow. Second operand 11 states and 143 transitions. [2024-06-27 23:45:01,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 456 transitions, 5508 flow [2024-06-27 23:45:03,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 456 transitions, 5213 flow, removed 51 selfloop flow, removed 8 redundant places. [2024-06-27 23:45:03,740 INFO L231 Difference]: Finished difference. Result has 471 places, 442 transitions, 4064 flow [2024-06-27 23:45:03,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3889, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4064, PETRI_PLACES=471, PETRI_TRANSITIONS=442} [2024-06-27 23:45:03,741 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 439 predicate places. [2024-06-27 23:45:03,741 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 442 transitions, 4064 flow [2024-06-27 23:45:03,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:45:03,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:45:03,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:45:03,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-27 23:45:03,741 INFO L420 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:45:03,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:45:03,742 INFO L85 PathProgramCache]: Analyzing trace with hash 574187016, now seen corresponding path program 34 times [2024-06-27 23:45:03,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:45:03,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902967399] [2024-06-27 23:45:03,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:45:03,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:45:03,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:45:04,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:45:04,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:45:04,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902967399] [2024-06-27 23:45:04,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902967399] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:45:04,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:45:04,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:45:04,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964225420] [2024-06-27 23:45:04,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:45:04,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:45:04,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:45:04,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:45:04,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:45:05,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:45:05,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 442 transitions, 4064 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:45:05,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:45:05,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:45:05,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:45:05,766 INFO L124 PetriNetUnfolderBase]: 754/1369 cut-off events. [2024-06-27 23:45:05,767 INFO L125 PetriNetUnfolderBase]: For 572525/572525 co-relation queries the response was YES. [2024-06-27 23:45:05,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12774 conditions, 1369 events. 754/1369 cut-off events. For 572525/572525 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 7610 event pairs, 49 based on Foata normal form. 1/1369 useless extension candidates. Maximal degree in co-relation 12549. Up to 1043 conditions per place. [2024-06-27 23:45:05,783 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 336 selfloop transitions, 117 changer transitions 0/456 dead transitions. [2024-06-27 23:45:05,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 481 places, 456 transitions, 5390 flow [2024-06-27 23:45:05,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:45:05,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:45:05,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-27 23:45:05,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-27 23:45:05,785 INFO L175 Difference]: Start difference. First operand has 471 places, 442 transitions, 4064 flow. Second operand 11 states and 143 transitions. [2024-06-27 23:45:05,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 481 places, 456 transitions, 5390 flow [2024-06-27 23:45:08,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 456 transitions, 5148 flow, removed 29 selfloop flow, removed 11 redundant places. [2024-06-27 23:45:08,277 INFO L231 Difference]: Finished difference. Result has 471 places, 442 transitions, 4061 flow [2024-06-27 23:45:08,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3822, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4061, PETRI_PLACES=471, PETRI_TRANSITIONS=442} [2024-06-27 23:45:08,277 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 439 predicate places. [2024-06-27 23:45:08,277 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 442 transitions, 4061 flow [2024-06-27 23:45:08,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:45:08,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:45:08,278 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:45:08,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-27 23:45:08,278 INFO L420 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:45:08,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:45:08,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1088475864, now seen corresponding path program 35 times [2024-06-27 23:45:08,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:45:08,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302580933] [2024-06-27 23:45:08,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:45:08,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:45:08,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:45:09,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:45:09,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:45:09,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302580933] [2024-06-27 23:45:09,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302580933] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:45:09,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:45:09,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:45:09,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757430821] [2024-06-27 23:45:09,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:45:09,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:45:09,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:45:09,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:45:09,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:45:09,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:45:09,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 442 transitions, 4061 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:45:09,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:45:09,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:45:09,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:45:10,309 INFO L124 PetriNetUnfolderBase]: 752/1366 cut-off events. [2024-06-27 23:45:10,309 INFO L125 PetriNetUnfolderBase]: For 559352/559352 co-relation queries the response was YES. [2024-06-27 23:45:10,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12574 conditions, 1366 events. 752/1366 cut-off events. For 559352/559352 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 7602 event pairs, 49 based on Foata normal form. 1/1366 useless extension candidates. Maximal degree in co-relation 12348. Up to 1041 conditions per place. [2024-06-27 23:45:10,329 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 350 selfloop transitions, 102 changer transitions 0/455 dead transitions. [2024-06-27 23:45:10,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 481 places, 455 transitions, 4997 flow [2024-06-27 23:45:10,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:45:10,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:45:10,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-27 23:45:10,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39669421487603307 [2024-06-27 23:45:10,330 INFO L175 Difference]: Start difference. First operand has 471 places, 442 transitions, 4061 flow. Second operand 11 states and 144 transitions. [2024-06-27 23:45:10,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 481 places, 455 transitions, 4997 flow [2024-06-27 23:45:12,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 455 transitions, 4560 flow, removed 30 selfloop flow, removed 11 redundant places. [2024-06-27 23:45:12,397 INFO L231 Difference]: Finished difference. Result has 471 places, 442 transitions, 3833 flow [2024-06-27 23:45:12,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3624, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3833, PETRI_PLACES=471, PETRI_TRANSITIONS=442} [2024-06-27 23:45:12,398 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 439 predicate places. [2024-06-27 23:45:12,398 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 442 transitions, 3833 flow [2024-06-27 23:45:12,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:45:12,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:45:12,398 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:45:12,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-27 23:45:12,398 INFO L420 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:45:12,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:45:12,399 INFO L85 PathProgramCache]: Analyzing trace with hash 574194673, now seen corresponding path program 35 times [2024-06-27 23:45:12,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:45:12,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226777599] [2024-06-27 23:45:12,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:45:12,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:45:12,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:45:13,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:45:13,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:45:13,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226777599] [2024-06-27 23:45:13,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226777599] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:45:13,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:45:13,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:45:13,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851834427] [2024-06-27 23:45:13,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:45:13,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:45:13,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:45:13,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:45:13,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:45:13,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:45:13,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 442 transitions, 3833 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:45:13,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:45:13,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:45:13,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:45:14,220 INFO L124 PetriNetUnfolderBase]: 750/1363 cut-off events. [2024-06-27 23:45:14,221 INFO L125 PetriNetUnfolderBase]: For 545079/545079 co-relation queries the response was YES. [2024-06-27 23:45:14,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12227 conditions, 1363 events. 750/1363 cut-off events. For 545079/545079 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 7595 event pairs, 54 based on Foata normal form. 1/1363 useless extension candidates. Maximal degree in co-relation 12000. Up to 1091 conditions per place. [2024-06-27 23:45:14,241 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 363 selfloop transitions, 89 changer transitions 0/455 dead transitions. [2024-06-27 23:45:14,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 481 places, 455 transitions, 4769 flow [2024-06-27 23:45:14,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:45:14,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:45:14,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-27 23:45:14,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39118457300275483 [2024-06-27 23:45:14,242 INFO L175 Difference]: Start difference. First operand has 471 places, 442 transitions, 3833 flow. Second operand 11 states and 142 transitions. [2024-06-27 23:45:14,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 481 places, 455 transitions, 4769 flow [2024-06-27 23:45:17,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 455 transitions, 4514 flow, removed 16 selfloop flow, removed 11 redundant places. [2024-06-27 23:45:17,495 INFO L231 Difference]: Finished difference. Result has 471 places, 442 transitions, 3761 flow [2024-06-27 23:45:17,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3578, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3761, PETRI_PLACES=471, PETRI_TRANSITIONS=442} [2024-06-27 23:45:17,495 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 439 predicate places. [2024-06-27 23:45:17,495 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 442 transitions, 3761 flow [2024-06-27 23:45:17,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:45:17,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:45:17,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:45:17,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-27 23:45:17,496 INFO L420 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:45:17,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:45:17,497 INFO L85 PathProgramCache]: Analyzing trace with hash 753871119, now seen corresponding path program 1 times [2024-06-27 23:45:17,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:45:17,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993335238] [2024-06-27 23:45:17,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:45:17,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:45:17,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:45:18,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:45:18,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:45:18,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993335238] [2024-06-27 23:45:18,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993335238] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:45:18,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:45:18,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:45:18,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813352235] [2024-06-27 23:45:18,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:45:18,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:45:18,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:45:18,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:45:18,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:45:19,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:45:19,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 442 transitions, 3761 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:45:19,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:45:19,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:45:19,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:45:19,693 INFO L124 PetriNetUnfolderBase]: 716/1333 cut-off events. [2024-06-27 23:45:19,693 INFO L125 PetriNetUnfolderBase]: For 570514/570514 co-relation queries the response was YES. [2024-06-27 23:45:19,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12046 conditions, 1333 events. 716/1333 cut-off events. For 570514/570514 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 7603 event pairs, 64 based on Foata normal form. 2/1334 useless extension candidates. Maximal degree in co-relation 11818. Up to 1020 conditions per place. [2024-06-27 23:45:19,713 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 348 selfloop transitions, 35 changer transitions 0/457 dead transitions. [2024-06-27 23:45:19,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 481 places, 457 transitions, 4607 flow [2024-06-27 23:45:19,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:45:19,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:45:19,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-27 23:45:19,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4022038567493113 [2024-06-27 23:45:19,715 INFO L175 Difference]: Start difference. First operand has 471 places, 442 transitions, 3761 flow. Second operand 11 states and 146 transitions. [2024-06-27 23:45:19,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 481 places, 457 transitions, 4607 flow [2024-06-27 23:45:23,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 457 transitions, 4374 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-27 23:45:23,187 INFO L231 Difference]: Finished difference. Result has 471 places, 443 transitions, 3646 flow [2024-06-27 23:45:23,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3528, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3646, PETRI_PLACES=471, PETRI_TRANSITIONS=443} [2024-06-27 23:45:23,187 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 439 predicate places. [2024-06-27 23:45:23,187 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 443 transitions, 3646 flow [2024-06-27 23:45:23,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:45:23,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:45:23,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:45:23,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-27 23:45:23,188 INFO L420 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:45:23,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:45:23,188 INFO L85 PathProgramCache]: Analyzing trace with hash -591620487, now seen corresponding path program 2 times [2024-06-27 23:45:23,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:45:23,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763974790] [2024-06-27 23:45:23,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:45:23,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:45:23,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:45:24,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:45:24,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:45:24,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763974790] [2024-06-27 23:45:24,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763974790] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:45:24,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:45:24,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:45:24,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367062103] [2024-06-27 23:45:24,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:45:24,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:45:24,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:45:24,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:45:24,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:45:24,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:45:24,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 443 transitions, 3646 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:45:24,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:45:24,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:45:24,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:45:25,226 INFO L124 PetriNetUnfolderBase]: 725/1352 cut-off events. [2024-06-27 23:45:25,227 INFO L125 PetriNetUnfolderBase]: For 577279/577279 co-relation queries the response was YES. [2024-06-27 23:45:25,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12077 conditions, 1352 events. 725/1352 cut-off events. For 577279/577279 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 7776 event pairs, 62 based on Foata normal form. 2/1353 useless extension candidates. Maximal degree in co-relation 11848. Up to 1030 conditions per place. [2024-06-27 23:45:25,248 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 353 selfloop transitions, 34 changer transitions 0/461 dead transitions. [2024-06-27 23:45:25,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 481 places, 461 transitions, 4512 flow [2024-06-27 23:45:25,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:45:25,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:45:25,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-27 23:45:25,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4049586776859504 [2024-06-27 23:45:25,249 INFO L175 Difference]: Start difference. First operand has 471 places, 443 transitions, 3646 flow. Second operand 11 states and 147 transitions. [2024-06-27 23:45:25,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 481 places, 461 transitions, 4512 flow [2024-06-27 23:45:28,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 461 transitions, 4404 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-27 23:45:28,474 INFO L231 Difference]: Finished difference. Result has 474 places, 445 transitions, 3664 flow [2024-06-27 23:45:28,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3538, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3664, PETRI_PLACES=474, PETRI_TRANSITIONS=445} [2024-06-27 23:45:28,474 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 442 predicate places. [2024-06-27 23:45:28,474 INFO L495 AbstractCegarLoop]: Abstraction has has 474 places, 445 transitions, 3664 flow [2024-06-27 23:45:28,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:45:28,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:45:28,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:45:28,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-27 23:45:28,475 INFO L420 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:45:28,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:45:28,475 INFO L85 PathProgramCache]: Analyzing trace with hash -473472357, now seen corresponding path program 3 times [2024-06-27 23:45:28,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:45:28,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243619546] [2024-06-27 23:45:28,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:45:28,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:45:28,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:45:30,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:45:30,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:45:30,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243619546] [2024-06-27 23:45:30,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243619546] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:45:30,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:45:30,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:45:30,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698780698] [2024-06-27 23:45:30,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:45:30,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:45:30,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:45:30,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:45:30,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:45:30,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:45:30,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 445 transitions, 3664 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:45:30,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:45:30,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:45:30,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:45:31,109 INFO L124 PetriNetUnfolderBase]: 726/1357 cut-off events. [2024-06-27 23:45:31,109 INFO L125 PetriNetUnfolderBase]: For 584142/584142 co-relation queries the response was YES. [2024-06-27 23:45:31,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12163 conditions, 1357 events. 726/1357 cut-off events. For 584142/584142 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 7848 event pairs, 54 based on Foata normal form. 2/1358 useless extension candidates. Maximal degree in co-relation 11932. Up to 1036 conditions per place. [2024-06-27 23:45:31,125 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 347 selfloop transitions, 38 changer transitions 0/459 dead transitions. [2024-06-27 23:45:31,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 459 transitions, 4514 flow [2024-06-27 23:45:31,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:45:31,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:45:31,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-27 23:45:31,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4049586776859504 [2024-06-27 23:45:31,126 INFO L175 Difference]: Start difference. First operand has 474 places, 445 transitions, 3664 flow. Second operand 11 states and 147 transitions. [2024-06-27 23:45:31,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 459 transitions, 4514 flow [2024-06-27 23:45:33,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 459 transitions, 4408 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-27 23:45:33,812 INFO L231 Difference]: Finished difference. Result has 477 places, 446 transitions, 3686 flow [2024-06-27 23:45:33,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3558, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3686, PETRI_PLACES=477, PETRI_TRANSITIONS=446} [2024-06-27 23:45:33,813 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 445 predicate places. [2024-06-27 23:45:33,813 INFO L495 AbstractCegarLoop]: Abstraction has has 477 places, 446 transitions, 3686 flow [2024-06-27 23:45:33,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:45:33,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:45:33,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:45:33,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-27 23:45:33,813 INFO L420 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:45:33,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:45:33,814 INFO L85 PathProgramCache]: Analyzing trace with hash -588758567, now seen corresponding path program 1 times [2024-06-27 23:45:33,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:45:33,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753273733] [2024-06-27 23:45:33,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:45:33,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:45:33,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:45:35,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:45:35,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:45:35,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753273733] [2024-06-27 23:45:35,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753273733] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:45:35,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:45:35,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:45:35,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803290299] [2024-06-27 23:45:35,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:45:35,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:45:35,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:45:35,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:45:35,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:45:35,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:45:35,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 446 transitions, 3686 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:45:35,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:45:35,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:45:35,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:45:36,000 INFO L124 PetriNetUnfolderBase]: 770/1403 cut-off events. [2024-06-27 23:45:36,001 INFO L125 PetriNetUnfolderBase]: For 568883/568883 co-relation queries the response was YES. [2024-06-27 23:45:36,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12410 conditions, 1403 events. 770/1403 cut-off events. For 568883/568883 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 7930 event pairs, 56 based on Foata normal form. 1/1403 useless extension candidates. Maximal degree in co-relation 12178. Up to 1234 conditions per place. [2024-06-27 23:45:36,023 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 421 selfloop transitions, 38 changer transitions 0/462 dead transitions. [2024-06-27 23:45:36,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 462 transitions, 4688 flow [2024-06-27 23:45:36,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:45:36,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:45:36,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-27 23:45:36,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38292011019283745 [2024-06-27 23:45:36,024 INFO L175 Difference]: Start difference. First operand has 477 places, 446 transitions, 3686 flow. Second operand 11 states and 139 transitions. [2024-06-27 23:45:36,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 462 transitions, 4688 flow [2024-06-27 23:45:38,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 462 transitions, 4570 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-27 23:45:38,732 INFO L231 Difference]: Finished difference. Result has 479 places, 448 transitions, 3699 flow [2024-06-27 23:45:38,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3568, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3699, PETRI_PLACES=479, PETRI_TRANSITIONS=448} [2024-06-27 23:45:38,733 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 447 predicate places. [2024-06-27 23:45:38,733 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 448 transitions, 3699 flow [2024-06-27 23:45:38,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:45:38,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:45:38,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:45:38,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-27 23:45:38,736 INFO L420 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:45:38,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:45:38,736 INFO L85 PathProgramCache]: Analyzing trace with hash 758344729, now seen corresponding path program 2 times [2024-06-27 23:45:38,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:45:38,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847363554] [2024-06-27 23:45:38,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:45:38,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:45:38,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:45:40,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:45:40,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:45:40,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847363554] [2024-06-27 23:45:40,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847363554] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:45:40,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:45:40,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:45:40,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512884935] [2024-06-27 23:45:40,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:45:40,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:45:40,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:45:40,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:45:40,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:45:40,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:45:40,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 448 transitions, 3699 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:45:40,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:45:40,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:45:40,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:45:41,784 INFO L124 PetriNetUnfolderBase]: 778/1418 cut-off events. [2024-06-27 23:45:41,784 INFO L125 PetriNetUnfolderBase]: For 588256/588256 co-relation queries the response was YES. [2024-06-27 23:45:41,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12723 conditions, 1418 events. 778/1418 cut-off events. For 588256/588256 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 8024 event pairs, 56 based on Foata normal form. 1/1418 useless extension candidates. Maximal degree in co-relation 12490. Up to 1220 conditions per place. [2024-06-27 23:45:41,806 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 415 selfloop transitions, 48 changer transitions 0/466 dead transitions. [2024-06-27 23:45:41,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 466 transitions, 5161 flow [2024-06-27 23:45:41,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:45:41,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:45:41,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-27 23:45:41,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3838383838383838 [2024-06-27 23:45:41,807 INFO L175 Difference]: Start difference. First operand has 479 places, 448 transitions, 3699 flow. Second operand 12 states and 152 transitions. [2024-06-27 23:45:41,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 466 transitions, 5161 flow [2024-06-27 23:45:45,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 481 places, 466 transitions, 5046 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-27 23:45:45,303 INFO L231 Difference]: Finished difference. Result has 482 places, 452 transitions, 3789 flow [2024-06-27 23:45:45,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3584, PETRI_DIFFERENCE_MINUEND_PLACES=470, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3789, PETRI_PLACES=482, PETRI_TRANSITIONS=452} [2024-06-27 23:45:45,304 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 450 predicate places. [2024-06-27 23:45:45,304 INFO L495 AbstractCegarLoop]: Abstraction has has 482 places, 452 transitions, 3789 flow [2024-06-27 23:45:45,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:45:45,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:45:45,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:45:45,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-27 23:45:45,304 INFO L420 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:45:45,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:45:45,305 INFO L85 PathProgramCache]: Analyzing trace with hash -473294417, now seen corresponding path program 3 times [2024-06-27 23:45:45,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:45:45,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650484767] [2024-06-27 23:45:45,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:45:45,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:45:45,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:45:47,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:45:47,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:45:47,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650484767] [2024-06-27 23:45:47,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650484767] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:45:47,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:45:47,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:45:47,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426353455] [2024-06-27 23:45:47,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:45:47,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:45:47,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:45:47,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:45:47,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:45:47,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:45:47,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 452 transitions, 3789 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:45:47,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:45:47,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:45:47,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:45:48,080 INFO L124 PetriNetUnfolderBase]: 781/1425 cut-off events. [2024-06-27 23:45:48,080 INFO L125 PetriNetUnfolderBase]: For 597878/597878 co-relation queries the response was YES. [2024-06-27 23:45:48,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12824 conditions, 1425 events. 781/1425 cut-off events. For 597878/597878 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 8095 event pairs, 56 based on Foata normal form. 1/1425 useless extension candidates. Maximal degree in co-relation 12590. Up to 1224 conditions per place. [2024-06-27 23:45:48,097 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 414 selfloop transitions, 51 changer transitions 0/468 dead transitions. [2024-06-27 23:45:48,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 468 transitions, 5211 flow [2024-06-27 23:45:48,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:45:48,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:45:48,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-27 23:45:48,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3813131313131313 [2024-06-27 23:45:48,098 INFO L175 Difference]: Start difference. First operand has 482 places, 452 transitions, 3789 flow. Second operand 12 states and 151 transitions. [2024-06-27 23:45:48,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 468 transitions, 5211 flow [2024-06-27 23:45:50,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 468 transitions, 5100 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-27 23:45:50,708 INFO L231 Difference]: Finished difference. Result has 486 places, 454 transitions, 3839 flow [2024-06-27 23:45:50,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3684, PETRI_DIFFERENCE_MINUEND_PLACES=474, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3839, PETRI_PLACES=486, PETRI_TRANSITIONS=454} [2024-06-27 23:45:50,709 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 454 predicate places. [2024-06-27 23:45:50,709 INFO L495 AbstractCegarLoop]: Abstraction has has 486 places, 454 transitions, 3839 flow [2024-06-27 23:45:50,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:45:50,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:45:50,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:45:50,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-27 23:45:50,709 INFO L420 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:45:50,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:45:50,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1299543851, now seen corresponding path program 1 times [2024-06-27 23:45:50,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:45:50,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465709585] [2024-06-27 23:45:50,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:45:50,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:45:50,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:45:51,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:45:51,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:45:51,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465709585] [2024-06-27 23:45:51,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465709585] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:45:51,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:45:51,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:45:51,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885005343] [2024-06-27 23:45:51,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:45:51,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:45:51,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:45:51,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:45:51,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:45:52,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:45:52,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 454 transitions, 3839 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:45:52,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:45:52,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:45:52,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:45:52,521 INFO L124 PetriNetUnfolderBase]: 784/1424 cut-off events. [2024-06-27 23:45:52,521 INFO L125 PetriNetUnfolderBase]: For 606588/606588 co-relation queries the response was YES. [2024-06-27 23:45:52,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12915 conditions, 1424 events. 784/1424 cut-off events. For 606588/606588 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 8088 event pairs, 63 based on Foata normal form. 1/1418 useless extension candidates. Maximal degree in co-relation 12679. Up to 1247 conditions per place. [2024-06-27 23:45:52,543 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 418 selfloop transitions, 51 changer transitions 0/472 dead transitions. [2024-06-27 23:45:52,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 495 places, 472 transitions, 4851 flow [2024-06-27 23:45:52,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:45:52,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:45:52,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-06-27 23:45:52,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41818181818181815 [2024-06-27 23:45:52,544 INFO L175 Difference]: Start difference. First operand has 486 places, 454 transitions, 3839 flow. Second operand 10 states and 138 transitions. [2024-06-27 23:45:52,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 495 places, 472 transitions, 4851 flow [2024-06-27 23:45:54,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 472 transitions, 4708 flow, removed 20 selfloop flow, removed 10 redundant places. [2024-06-27 23:45:54,297 INFO L231 Difference]: Finished difference. Result has 486 places, 456 transitions, 3844 flow [2024-06-27 23:45:54,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3696, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3844, PETRI_PLACES=486, PETRI_TRANSITIONS=456} [2024-06-27 23:45:54,297 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 454 predicate places. [2024-06-27 23:45:54,297 INFO L495 AbstractCegarLoop]: Abstraction has has 486 places, 456 transitions, 3844 flow [2024-06-27 23:45:54,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:45:54,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:45:54,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:45:54,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-27 23:45:54,298 INFO L420 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:45:54,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:45:54,298 INFO L85 PathProgramCache]: Analyzing trace with hash 758524219, now seen corresponding path program 4 times [2024-06-27 23:45:54,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:45:54,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714140122] [2024-06-27 23:45:54,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:45:54,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:45:54,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:45:55,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:45:55,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:45:55,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714140122] [2024-06-27 23:45:55,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714140122] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:45:55,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:45:55,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:45:55,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316259025] [2024-06-27 23:45:55,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:45:55,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:45:55,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:45:55,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:45:55,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:45:55,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:45:55,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 456 transitions, 3844 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:45:55,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:45:55,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:45:55,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:45:56,498 INFO L124 PetriNetUnfolderBase]: 782/1427 cut-off events. [2024-06-27 23:45:56,498 INFO L125 PetriNetUnfolderBase]: For 590939/590939 co-relation queries the response was YES. [2024-06-27 23:45:56,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12714 conditions, 1427 events. 782/1427 cut-off events. For 590939/590939 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 8123 event pairs, 55 based on Foata normal form. 1/1427 useless extension candidates. Maximal degree in co-relation 12478. Up to 1227 conditions per place. [2024-06-27 23:45:56,517 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 413 selfloop transitions, 53 changer transitions 0/469 dead transitions. [2024-06-27 23:45:56,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 496 places, 469 transitions, 4810 flow [2024-06-27 23:45:56,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:45:56,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:45:56,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-27 23:45:56,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39118457300275483 [2024-06-27 23:45:56,518 INFO L175 Difference]: Start difference. First operand has 486 places, 456 transitions, 3844 flow. Second operand 11 states and 142 transitions. [2024-06-27 23:45:56,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 496 places, 469 transitions, 4810 flow [2024-06-27 23:45:58,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 488 places, 469 transitions, 4646 flow, removed 34 selfloop flow, removed 8 redundant places. [2024-06-27 23:45:58,606 INFO L231 Difference]: Finished difference. Result has 489 places, 456 transitions, 3791 flow [2024-06-27 23:45:58,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3680, PETRI_DIFFERENCE_MINUEND_PLACES=478, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3791, PETRI_PLACES=489, PETRI_TRANSITIONS=456} [2024-06-27 23:45:58,606 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 457 predicate places. [2024-06-27 23:45:58,606 INFO L495 AbstractCegarLoop]: Abstraction has has 489 places, 456 transitions, 3791 flow [2024-06-27 23:45:58,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:45:58,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:45:58,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:45:58,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-27 23:45:58,607 INFO L420 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:45:58,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:45:58,607 INFO L85 PathProgramCache]: Analyzing trace with hash 923978903, now seen corresponding path program 4 times [2024-06-27 23:45:58,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:45:58,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149447536] [2024-06-27 23:45:58,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:45:58,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:45:58,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:46:00,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:46:00,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:46:00,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149447536] [2024-06-27 23:46:00,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149447536] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:46:00,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:46:00,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:46:00,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374741582] [2024-06-27 23:46:00,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:46:00,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:46:00,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:46:00,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:46:00,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:46:00,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:46:00,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 489 places, 456 transitions, 3791 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:46:00,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:46:00,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:46:00,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:46:00,812 INFO L124 PetriNetUnfolderBase]: 746/1395 cut-off events. [2024-06-27 23:46:00,812 INFO L125 PetriNetUnfolderBase]: For 621686/621686 co-relation queries the response was YES. [2024-06-27 23:46:00,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12547 conditions, 1395 events. 746/1395 cut-off events. For 621686/621686 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 8121 event pairs, 49 based on Foata normal form. 2/1396 useless extension candidates. Maximal degree in co-relation 12309. Up to 1066 conditions per place. [2024-06-27 23:46:00,834 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 354 selfloop transitions, 41 changer transitions 0/469 dead transitions. [2024-06-27 23:46:00,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 469 transitions, 4659 flow [2024-06-27 23:46:00,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:46:00,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:46:00,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 148 transitions. [2024-06-27 23:46:00,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40771349862258954 [2024-06-27 23:46:00,836 INFO L175 Difference]: Start difference. First operand has 489 places, 456 transitions, 3791 flow. Second operand 11 states and 148 transitions. [2024-06-27 23:46:00,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 469 transitions, 4659 flow [2024-06-27 23:46:03,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 469 transitions, 4548 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-27 23:46:03,924 INFO L231 Difference]: Finished difference. Result has 490 places, 457 transitions, 3816 flow [2024-06-27 23:46:03,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3680, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=415, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3816, PETRI_PLACES=490, PETRI_TRANSITIONS=457} [2024-06-27 23:46:03,925 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 458 predicate places. [2024-06-27 23:46:03,925 INFO L495 AbstractCegarLoop]: Abstraction has has 490 places, 457 transitions, 3816 flow [2024-06-27 23:46:03,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:46:03,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:46:03,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:46:03,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2024-06-27 23:46:03,925 INFO L420 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:46:03,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:46:03,926 INFO L85 PathProgramCache]: Analyzing trace with hash -301153095, now seen corresponding path program 1 times [2024-06-27 23:46:03,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:46:03,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109140851] [2024-06-27 23:46:03,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:46:03,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:46:03,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:46:05,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:46:05,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:46:05,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109140851] [2024-06-27 23:46:05,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109140851] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:46:05,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:46:05,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:46:05,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060001296] [2024-06-27 23:46:05,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:46:05,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:46:05,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:46:05,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:46:05,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:46:05,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:46:05,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 457 transitions, 3816 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:46:05,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:46:05,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:46:05,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:46:06,096 INFO L124 PetriNetUnfolderBase]: 789/1440 cut-off events. [2024-06-27 23:46:06,096 INFO L125 PetriNetUnfolderBase]: For 604582/604582 co-relation queries the response was YES. [2024-06-27 23:46:06,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12845 conditions, 1440 events. 789/1440 cut-off events. For 604582/604582 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 8232 event pairs, 70 based on Foata normal form. 1/1440 useless extension candidates. Maximal degree in co-relation 12606. Up to 1286 conditions per place. [2024-06-27 23:46:06,120 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 432 selfloop transitions, 38 changer transitions 0/473 dead transitions. [2024-06-27 23:46:06,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 473 transitions, 4826 flow [2024-06-27 23:46:06,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:46:06,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:46:06,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-27 23:46:06,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-27 23:46:06,121 INFO L175 Difference]: Start difference. First operand has 490 places, 457 transitions, 3816 flow. Second operand 10 states and 135 transitions. [2024-06-27 23:46:06,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 473 transitions, 4826 flow [2024-06-27 23:46:08,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 490 places, 473 transitions, 4700 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-27 23:46:08,114 INFO L231 Difference]: Finished difference. Result has 491 places, 459 transitions, 3811 flow [2024-06-27 23:46:08,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3690, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3811, PETRI_PLACES=491, PETRI_TRANSITIONS=459} [2024-06-27 23:46:08,115 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 459 predicate places. [2024-06-27 23:46:08,115 INFO L495 AbstractCegarLoop]: Abstraction has has 491 places, 459 transitions, 3811 flow [2024-06-27 23:46:08,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:46:08,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:46:08,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:46:08,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2024-06-27 23:46:08,115 INFO L420 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:46:08,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:46:08,116 INFO L85 PathProgramCache]: Analyzing trace with hash -307648525, now seen corresponding path program 2 times [2024-06-27 23:46:08,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:46:08,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446813581] [2024-06-27 23:46:08,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:46:08,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:46:08,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:46:09,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:46:09,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:46:09,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446813581] [2024-06-27 23:46:09,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446813581] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:46:09,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:46:09,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:46:09,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065201236] [2024-06-27 23:46:09,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:46:09,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:46:09,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:46:09,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:46:09,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:46:09,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:46:09,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 491 places, 459 transitions, 3811 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:46:09,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:46:09,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:46:09,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:46:10,194 INFO L124 PetriNetUnfolderBase]: 797/1442 cut-off events. [2024-06-27 23:46:10,194 INFO L125 PetriNetUnfolderBase]: For 629679/629679 co-relation queries the response was YES. [2024-06-27 23:46:10,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13115 conditions, 1442 events. 797/1442 cut-off events. For 629679/629679 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 8160 event pairs, 53 based on Foata normal form. 1/1433 useless extension candidates. Maximal degree in co-relation 12876. Up to 1159 conditions per place. [2024-06-27 23:46:10,212 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 398 selfloop transitions, 77 changer transitions 0/478 dead transitions. [2024-06-27 23:46:10,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 478 transitions, 5285 flow [2024-06-27 23:46:10,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:46:10,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:46:10,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 144 transitions. [2024-06-27 23:46:10,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43636363636363634 [2024-06-27 23:46:10,214 INFO L175 Difference]: Start difference. First operand has 491 places, 459 transitions, 3811 flow. Second operand 10 states and 144 transitions. [2024-06-27 23:46:10,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 478 transitions, 5285 flow [2024-06-27 23:46:12,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 492 places, 478 transitions, 5180 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-27 23:46:12,716 INFO L231 Difference]: Finished difference. Result has 493 places, 463 transitions, 3947 flow [2024-06-27 23:46:12,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3706, PETRI_DIFFERENCE_MINUEND_PLACES=483, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=459, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3947, PETRI_PLACES=493, PETRI_TRANSITIONS=463} [2024-06-27 23:46:12,716 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 461 predicate places. [2024-06-27 23:46:12,716 INFO L495 AbstractCegarLoop]: Abstraction has has 493 places, 463 transitions, 3947 flow [2024-06-27 23:46:12,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:46:12,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:46:12,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:46:12,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2024-06-27 23:46:12,717 INFO L420 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:46:12,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:46:12,717 INFO L85 PathProgramCache]: Analyzing trace with hash -307828263, now seen corresponding path program 5 times [2024-06-27 23:46:12,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:46:12,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044262798] [2024-06-27 23:46:12,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:46:12,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:46:12,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:46:14,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:46:14,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:46:14,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044262798] [2024-06-27 23:46:14,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044262798] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:46:14,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:46:14,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:46:14,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026918689] [2024-06-27 23:46:14,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:46:14,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:46:14,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:46:14,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:46:14,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:46:14,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:46:14,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 463 transitions, 3947 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:46:14,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:46:14,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:46:14,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:46:15,374 INFO L124 PetriNetUnfolderBase]: 805/1468 cut-off events. [2024-06-27 23:46:15,375 INFO L125 PetriNetUnfolderBase]: For 659052/659052 co-relation queries the response was YES. [2024-06-27 23:46:15,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13595 conditions, 1468 events. 805/1468 cut-off events. For 659052/659052 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 8416 event pairs, 54 based on Foata normal form. 1/1468 useless extension candidates. Maximal degree in co-relation 13355. Up to 1230 conditions per place. [2024-06-27 23:46:15,398 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 416 selfloop transitions, 61 changer transitions 0/480 dead transitions. [2024-06-27 23:46:15,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 503 places, 480 transitions, 5455 flow [2024-06-27 23:46:15,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:46:15,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:46:15,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 148 transitions. [2024-06-27 23:46:15,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40771349862258954 [2024-06-27 23:46:15,399 INFO L175 Difference]: Start difference. First operand has 493 places, 463 transitions, 3947 flow. Second operand 11 states and 148 transitions. [2024-06-27 23:46:15,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 503 places, 480 transitions, 5455 flow [2024-06-27 23:46:17,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 497 places, 480 transitions, 5341 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-27 23:46:17,806 INFO L231 Difference]: Finished difference. Result has 498 places, 467 transitions, 4072 flow [2024-06-27 23:46:17,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3833, PETRI_DIFFERENCE_MINUEND_PLACES=487, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4072, PETRI_PLACES=498, PETRI_TRANSITIONS=467} [2024-06-27 23:46:17,806 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 466 predicate places. [2024-06-27 23:46:17,806 INFO L495 AbstractCegarLoop]: Abstraction has has 498 places, 467 transitions, 4072 flow [2024-06-27 23:46:17,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:46:17,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:46:17,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:46:17,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2024-06-27 23:46:17,807 INFO L420 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:46:17,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:46:17,808 INFO L85 PathProgramCache]: Analyzing trace with hash -307648773, now seen corresponding path program 6 times [2024-06-27 23:46:17,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:46:17,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289097739] [2024-06-27 23:46:17,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:46:17,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:46:17,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:46:19,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:46:19,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:46:19,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289097739] [2024-06-27 23:46:19,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289097739] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:46:19,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:46:19,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:46:19,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234005947] [2024-06-27 23:46:19,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:46:19,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:46:19,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:46:19,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:46:19,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:46:19,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:46:19,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 498 places, 467 transitions, 4072 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:46:19,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:46:19,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:46:19,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:46:20,347 INFO L124 PetriNetUnfolderBase]: 813/1483 cut-off events. [2024-06-27 23:46:20,347 INFO L125 PetriNetUnfolderBase]: For 687921/687921 co-relation queries the response was YES. [2024-06-27 23:46:20,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14070 conditions, 1483 events. 813/1483 cut-off events. For 687921/687921 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 8526 event pairs, 54 based on Foata normal form. 1/1483 useless extension candidates. Maximal degree in co-relation 13827. Up to 1222 conditions per place. [2024-06-27 23:46:20,371 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 413 selfloop transitions, 69 changer transitions 0/485 dead transitions. [2024-06-27 23:46:20,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 509 places, 485 transitions, 6018 flow [2024-06-27 23:46:20,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:46:20,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:46:20,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 157 transitions. [2024-06-27 23:46:20,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39646464646464646 [2024-06-27 23:46:20,372 INFO L175 Difference]: Start difference. First operand has 498 places, 467 transitions, 4072 flow. Second operand 12 states and 157 transitions. [2024-06-27 23:46:20,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 509 places, 485 transitions, 6018 flow [2024-06-27 23:46:22,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 502 places, 485 transitions, 5870 flow, removed 40 selfloop flow, removed 7 redundant places. [2024-06-27 23:46:22,903 INFO L231 Difference]: Finished difference. Result has 503 places, 471 transitions, 4183 flow [2024-06-27 23:46:22,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3944, PETRI_DIFFERENCE_MINUEND_PLACES=491, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4183, PETRI_PLACES=503, PETRI_TRANSITIONS=471} [2024-06-27 23:46:22,903 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 471 predicate places. [2024-06-27 23:46:22,903 INFO L495 AbstractCegarLoop]: Abstraction has has 503 places, 471 transitions, 4183 flow [2024-06-27 23:46:22,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:46:22,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:46:22,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:46:22,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2024-06-27 23:46:22,904 INFO L420 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:46:22,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:46:22,904 INFO L85 PathProgramCache]: Analyzing trace with hash 924156843, now seen corresponding path program 7 times [2024-06-27 23:46:22,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:46:22,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563062027] [2024-06-27 23:46:22,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:46:22,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:46:22,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:46:24,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:46:24,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:46:24,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563062027] [2024-06-27 23:46:24,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563062027] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:46:24,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:46:24,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:46:24,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991728903] [2024-06-27 23:46:24,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:46:24,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:46:24,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:46:24,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:46:24,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:46:24,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:46:24,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 471 transitions, 4183 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:46:24,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:46:24,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:46:24,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:46:25,237 INFO L124 PetriNetUnfolderBase]: 811/1480 cut-off events. [2024-06-27 23:46:25,237 INFO L125 PetriNetUnfolderBase]: For 672530/672530 co-relation queries the response was YES. [2024-06-27 23:46:25,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13893 conditions, 1480 events. 811/1480 cut-off events. For 672530/672530 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 8492 event pairs, 52 based on Foata normal form. 1/1480 useless extension candidates. Maximal degree in co-relation 13648. Up to 1258 conditions per place. [2024-06-27 23:46:25,272 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 422 selfloop transitions, 58 changer transitions 0/483 dead transitions. [2024-06-27 23:46:25,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 483 transitions, 5173 flow [2024-06-27 23:46:25,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:46:25,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:46:25,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-27 23:46:25,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4049586776859504 [2024-06-27 23:46:25,274 INFO L175 Difference]: Start difference. First operand has 503 places, 471 transitions, 4183 flow. Second operand 11 states and 147 transitions. [2024-06-27 23:46:25,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 483 transitions, 5173 flow [2024-06-27 23:46:28,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 505 places, 483 transitions, 4978 flow, removed 40 selfloop flow, removed 8 redundant places. [2024-06-27 23:46:28,110 INFO L231 Difference]: Finished difference. Result has 506 places, 471 transitions, 4109 flow [2024-06-27 23:46:28,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3988, PETRI_DIFFERENCE_MINUEND_PLACES=495, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4109, PETRI_PLACES=506, PETRI_TRANSITIONS=471} [2024-06-27 23:46:28,111 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 474 predicate places. [2024-06-27 23:46:28,111 INFO L495 AbstractCegarLoop]: Abstraction has has 506 places, 471 transitions, 4109 flow [2024-06-27 23:46:28,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:46:28,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:46:28,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:46:28,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2024-06-27 23:46:28,111 INFO L420 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:46:28,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:46:28,112 INFO L85 PathProgramCache]: Analyzing trace with hash 930650103, now seen corresponding path program 8 times [2024-06-27 23:46:28,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:46:28,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380957233] [2024-06-27 23:46:28,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:46:28,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:46:28,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:46:29,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:46:29,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:46:29,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380957233] [2024-06-27 23:46:29,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380957233] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:46:29,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:46:29,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:46:29,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052767779] [2024-06-27 23:46:29,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:46:29,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:46:29,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:46:29,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:46:29,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:46:29,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:46:29,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 471 transitions, 4109 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:46:29,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:46:29,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:46:29,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:46:30,390 INFO L124 PetriNetUnfolderBase]: 814/1485 cut-off events. [2024-06-27 23:46:30,390 INFO L125 PetriNetUnfolderBase]: For 678413/678413 co-relation queries the response was YES. [2024-06-27 23:46:30,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13892 conditions, 1485 events. 814/1485 cut-off events. For 678413/678413 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 8534 event pairs, 54 based on Foata normal form. 1/1485 useless extension candidates. Maximal degree in co-relation 13646. Up to 1224 conditions per place. [2024-06-27 23:46:30,414 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 403 selfloop transitions, 80 changer transitions 0/486 dead transitions. [2024-06-27 23:46:30,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 517 places, 486 transitions, 5577 flow [2024-06-27 23:46:30,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:46:30,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:46:30,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-27 23:46:30,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-27 23:46:30,415 INFO L175 Difference]: Start difference. First operand has 506 places, 471 transitions, 4109 flow. Second operand 12 states and 153 transitions. [2024-06-27 23:46:30,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 517 places, 486 transitions, 5577 flow [2024-06-27 23:46:33,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 486 transitions, 5455 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 23:46:33,047 INFO L231 Difference]: Finished difference. Result has 508 places, 473 transitions, 4202 flow [2024-06-27 23:46:33,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3987, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4202, PETRI_PLACES=508, PETRI_TRANSITIONS=473} [2024-06-27 23:46:33,047 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 476 predicate places. [2024-06-27 23:46:33,047 INFO L495 AbstractCegarLoop]: Abstraction has has 508 places, 473 transitions, 4202 flow [2024-06-27 23:46:33,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:46:33,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:46:33,048 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:46:33,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2024-06-27 23:46:33,048 INFO L420 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:46:33,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:46:33,048 INFO L85 PathProgramCache]: Analyzing trace with hash -301153405, now seen corresponding path program 3 times [2024-06-27 23:46:33,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:46:33,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816990769] [2024-06-27 23:46:33,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:46:33,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:46:33,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:46:34,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:46:34,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:46:34,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816990769] [2024-06-27 23:46:34,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816990769] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:46:34,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:46:34,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:46:34,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902815380] [2024-06-27 23:46:34,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:46:34,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:46:34,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:46:34,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:46:34,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:46:34,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:46:34,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 473 transitions, 4202 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:46:34,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:46:34,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:46:34,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:46:35,024 INFO L124 PetriNetUnfolderBase]: 817/1483 cut-off events. [2024-06-27 23:46:35,024 INFO L125 PetriNetUnfolderBase]: For 685229/685229 co-relation queries the response was YES. [2024-06-27 23:46:35,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14006 conditions, 1483 events. 817/1483 cut-off events. For 685229/685229 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 8493 event pairs, 53 based on Foata normal form. 1/1474 useless extension candidates. Maximal degree in co-relation 13759. Up to 1191 conditions per place. [2024-06-27 23:46:35,048 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 387 selfloop transitions, 100 changer transitions 0/490 dead transitions. [2024-06-27 23:46:35,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 517 places, 490 transitions, 5672 flow [2024-06-27 23:46:35,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:46:35,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:46:35,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 141 transitions. [2024-06-27 23:46:35,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42727272727272725 [2024-06-27 23:46:35,049 INFO L175 Difference]: Start difference. First operand has 508 places, 473 transitions, 4202 flow. Second operand 10 states and 141 transitions. [2024-06-27 23:46:35,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 517 places, 490 transitions, 5672 flow [2024-06-27 23:46:37,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 508 places, 490 transitions, 5504 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-27 23:46:37,387 INFO L231 Difference]: Finished difference. Result has 509 places, 475 transitions, 4277 flow [2024-06-27 23:46:37,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4034, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=473, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4277, PETRI_PLACES=509, PETRI_TRANSITIONS=475} [2024-06-27 23:46:37,387 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 477 predicate places. [2024-06-27 23:46:37,387 INFO L495 AbstractCegarLoop]: Abstraction has has 509 places, 475 transitions, 4277 flow [2024-06-27 23:46:37,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:46:37,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:46:37,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:46:37,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2024-06-27 23:46:37,388 INFO L420 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:46:37,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:46:37,389 INFO L85 PathProgramCache]: Analyzing trace with hash 930650351, now seen corresponding path program 4 times [2024-06-27 23:46:37,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:46:37,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824378591] [2024-06-27 23:46:37,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:46:37,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:46:37,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:46:38,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:46:38,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:46:38,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824378591] [2024-06-27 23:46:38,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824378591] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:46:38,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:46:38,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:46:38,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120754509] [2024-06-27 23:46:38,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:46:38,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:46:38,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:46:38,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:46:38,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:46:38,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:46:38,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 509 places, 475 transitions, 4277 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:46:38,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:46:38,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:46:38,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:46:39,509 INFO L124 PetriNetUnfolderBase]: 820/1488 cut-off events. [2024-06-27 23:46:39,509 INFO L125 PetriNetUnfolderBase]: For 691341/691341 co-relation queries the response was YES. [2024-06-27 23:46:39,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14114 conditions, 1488 events. 820/1488 cut-off events. For 691341/691341 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 8515 event pairs, 53 based on Foata normal form. 1/1479 useless extension candidates. Maximal degree in co-relation 13867. Up to 1195 conditions per place. [2024-06-27 23:46:39,527 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 397 selfloop transitions, 92 changer transitions 0/492 dead transitions. [2024-06-27 23:46:39,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 518 places, 492 transitions, 5757 flow [2024-06-27 23:46:39,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:46:39,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:46:39,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 142 transitions. [2024-06-27 23:46:39,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4303030303030303 [2024-06-27 23:46:39,528 INFO L175 Difference]: Start difference. First operand has 509 places, 475 transitions, 4277 flow. Second operand 10 states and 142 transitions. [2024-06-27 23:46:39,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 518 places, 492 transitions, 5757 flow [2024-06-27 23:46:41,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 492 transitions, 5540 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-27 23:46:41,925 INFO L231 Difference]: Finished difference. Result has 512 places, 477 transitions, 4293 flow [2024-06-27 23:46:41,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4068, PETRI_DIFFERENCE_MINUEND_PLACES=502, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=475, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4293, PETRI_PLACES=512, PETRI_TRANSITIONS=477} [2024-06-27 23:46:41,925 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 480 predicate places. [2024-06-27 23:46:41,925 INFO L495 AbstractCegarLoop]: Abstraction has has 512 places, 477 transitions, 4293 flow [2024-06-27 23:46:41,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:46:41,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:46:41,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:46:41,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2024-06-27 23:46:41,926 INFO L420 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:46:41,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:46:41,926 INFO L85 PathProgramCache]: Analyzing trace with hash 930419711, now seen corresponding path program 5 times [2024-06-27 23:46:41,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:46:41,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336171504] [2024-06-27 23:46:41,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:46:41,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:46:41,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:46:43,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:46:43,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:46:43,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336171504] [2024-06-27 23:46:43,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336171504] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:46:43,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:46:43,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:46:43,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435576712] [2024-06-27 23:46:43,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:46:43,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:46:43,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:46:43,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:46:43,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:46:43,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:46:43,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 512 places, 477 transitions, 4293 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:46:43,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:46:43,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:46:43,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:46:43,916 INFO L124 PetriNetUnfolderBase]: 818/1483 cut-off events. [2024-06-27 23:46:43,916 INFO L125 PetriNetUnfolderBase]: For 675046/675046 co-relation queries the response was YES. [2024-06-27 23:46:43,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13881 conditions, 1483 events. 818/1483 cut-off events. For 675046/675046 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 8500 event pairs, 53 based on Foata normal form. 1/1474 useless extension candidates. Maximal degree in co-relation 13633. Up to 1193 conditions per place. [2024-06-27 23:46:43,940 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 403 selfloop transitions, 85 changer transitions 0/491 dead transitions. [2024-06-27 23:46:43,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 521 places, 491 transitions, 5303 flow [2024-06-27 23:46:43,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:46:43,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:46:43,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 142 transitions. [2024-06-27 23:46:43,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4303030303030303 [2024-06-27 23:46:43,941 INFO L175 Difference]: Start difference. First operand has 512 places, 477 transitions, 4293 flow. Second operand 10 states and 142 transitions. [2024-06-27 23:46:43,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 521 places, 491 transitions, 5303 flow [2024-06-27 23:46:46,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 514 places, 491 transitions, 5110 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-27 23:46:46,234 INFO L231 Difference]: Finished difference. Result has 515 places, 477 transitions, 4277 flow [2024-06-27 23:46:46,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4100, PETRI_DIFFERENCE_MINUEND_PLACES=505, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=477, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4277, PETRI_PLACES=515, PETRI_TRANSITIONS=477} [2024-06-27 23:46:46,234 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 483 predicate places. [2024-06-27 23:46:46,234 INFO L495 AbstractCegarLoop]: Abstraction has has 515 places, 477 transitions, 4277 flow [2024-06-27 23:46:46,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:46:46,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:46:46,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:46:46,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2024-06-27 23:46:46,235 INFO L420 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:46:46,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:46:46,235 INFO L85 PathProgramCache]: Analyzing trace with hash 930412953, now seen corresponding path program 9 times [2024-06-27 23:46:46,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:46:46,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534143482] [2024-06-27 23:46:46,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:46:46,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:46:46,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:46:47,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:46:47,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:46:47,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534143482] [2024-06-27 23:46:47,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534143482] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:46:47,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:46:47,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:46:47,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664173163] [2024-06-27 23:46:47,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:46:47,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:46:47,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:46:47,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:46:47,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:46:48,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:46:48,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 515 places, 477 transitions, 4277 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:46:48,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:46:48,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:46:48,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:46:48,636 INFO L124 PetriNetUnfolderBase]: 821/1499 cut-off events. [2024-06-27 23:46:48,636 INFO L125 PetriNetUnfolderBase]: For 681553/681553 co-relation queries the response was YES. [2024-06-27 23:46:48,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13948 conditions, 1499 events. 821/1499 cut-off events. For 681553/681553 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 8699 event pairs, 54 based on Foata normal form. 1/1499 useless extension candidates. Maximal degree in co-relation 13699. Up to 1271 conditions per place. [2024-06-27 23:46:48,661 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 427 selfloop transitions, 62 changer transitions 0/492 dead transitions. [2024-06-27 23:46:48,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 525 places, 492 transitions, 5765 flow [2024-06-27 23:46:48,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:46:48,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:46:48,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-27 23:46:48,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4049586776859504 [2024-06-27 23:46:48,663 INFO L175 Difference]: Start difference. First operand has 515 places, 477 transitions, 4277 flow. Second operand 11 states and 147 transitions. [2024-06-27 23:46:48,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 525 places, 492 transitions, 5765 flow [2024-06-27 23:46:51,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 514 places, 492 transitions, 5509 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-27 23:46:51,318 INFO L231 Difference]: Finished difference. Result has 515 places, 479 transitions, 4200 flow [2024-06-27 23:46:51,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4021, PETRI_DIFFERENCE_MINUEND_PLACES=504, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=477, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4200, PETRI_PLACES=515, PETRI_TRANSITIONS=479} [2024-06-27 23:46:51,318 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 483 predicate places. [2024-06-27 23:46:51,318 INFO L495 AbstractCegarLoop]: Abstraction has has 515 places, 479 transitions, 4200 flow [2024-06-27 23:46:51,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:46:51,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:46:51,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:46:51,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2024-06-27 23:46:51,319 INFO L420 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:46:51,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:46:51,320 INFO L85 PathProgramCache]: Analyzing trace with hash 930419463, now seen corresponding path program 10 times [2024-06-27 23:46:51,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:46:51,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015459412] [2024-06-27 23:46:51,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:46:51,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:46:51,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:46:52,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:46:52,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:46:52,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015459412] [2024-06-27 23:46:52,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015459412] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:46:52,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:46:52,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:46:52,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091461874] [2024-06-27 23:46:52,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:46:52,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:46:52,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:46:52,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:46:52,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:46:53,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:46:53,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 515 places, 479 transitions, 4200 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:46:53,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:46:53,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:46:53,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:46:53,714 INFO L124 PetriNetUnfolderBase]: 819/1496 cut-off events. [2024-06-27 23:46:53,715 INFO L125 PetriNetUnfolderBase]: For 662704/662704 co-relation queries the response was YES. [2024-06-27 23:46:53,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13616 conditions, 1496 events. 819/1496 cut-off events. For 662704/662704 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 8656 event pairs, 54 based on Foata normal form. 1/1496 useless extension candidates. Maximal degree in co-relation 13365. Up to 1233 conditions per place. [2024-06-27 23:46:53,739 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 413 selfloop transitions, 75 changer transitions 0/491 dead transitions. [2024-06-27 23:46:53,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 526 places, 491 transitions, 5206 flow [2024-06-27 23:46:53,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:46:53,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:46:53,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 154 transitions. [2024-06-27 23:46:53,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-27 23:46:53,743 INFO L175 Difference]: Start difference. First operand has 515 places, 479 transitions, 4200 flow. Second operand 12 states and 154 transitions. [2024-06-27 23:46:53,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 526 places, 491 transitions, 5206 flow [2024-06-27 23:46:56,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 516 places, 491 transitions, 4983 flow, removed 38 selfloop flow, removed 10 redundant places. [2024-06-27 23:46:56,499 INFO L231 Difference]: Finished difference. Result has 517 places, 479 transitions, 4132 flow [2024-06-27 23:46:56,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3977, PETRI_DIFFERENCE_MINUEND_PLACES=505, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4132, PETRI_PLACES=517, PETRI_TRANSITIONS=479} [2024-06-27 23:46:56,499 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 485 predicate places. [2024-06-27 23:46:56,499 INFO L495 AbstractCegarLoop]: Abstraction has has 517 places, 479 transitions, 4132 flow [2024-06-27 23:46:56,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:46:56,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:46:56,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:46:56,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2024-06-27 23:46:56,500 INFO L420 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:46:56,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:46:56,500 INFO L85 PathProgramCache]: Analyzing trace with hash -816961351, now seen corresponding path program 5 times [2024-06-27 23:46:56,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:46:56,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189744939] [2024-06-27 23:46:56,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:46:56,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:46:56,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:46:58,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:46:58,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:46:58,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189744939] [2024-06-27 23:46:58,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189744939] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:46:58,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:46:58,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:46:58,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491335185] [2024-06-27 23:46:58,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:46:58,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:46:58,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:46:58,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:46:58,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:46:58,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:46:58,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 479 transitions, 4132 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:46:58,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:46:58,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:46:58,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:46:59,073 INFO L124 PetriNetUnfolderBase]: 777/1456 cut-off events. [2024-06-27 23:46:59,074 INFO L125 PetriNetUnfolderBase]: For 696986/696986 co-relation queries the response was YES. [2024-06-27 23:46:59,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13441 conditions, 1456 events. 777/1456 cut-off events. For 696986/696986 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 8690 event pairs, 49 based on Foata normal form. 2/1454 useless extension candidates. Maximal degree in co-relation 13189. Up to 1106 conditions per place. [2024-06-27 23:46:59,098 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 370 selfloop transitions, 47 changer transitions 0/491 dead transitions. [2024-06-27 23:46:59,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 527 places, 491 transitions, 5042 flow [2024-06-27 23:46:59,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:46:59,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:46:59,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 149 transitions. [2024-06-27 23:46:59,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41046831955922863 [2024-06-27 23:46:59,100 INFO L175 Difference]: Start difference. First operand has 517 places, 479 transitions, 4132 flow. Second operand 11 states and 149 transitions. [2024-06-27 23:46:59,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 527 places, 491 transitions, 5042 flow [2024-06-27 23:47:01,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 515 places, 491 transitions, 4853 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-06-27 23:47:01,626 INFO L231 Difference]: Finished difference. Result has 516 places, 480 transitions, 4093 flow [2024-06-27 23:47:01,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3943, PETRI_DIFFERENCE_MINUEND_PLACES=505, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4093, PETRI_PLACES=516, PETRI_TRANSITIONS=480} [2024-06-27 23:47:01,626 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 484 predicate places. [2024-06-27 23:47:01,626 INFO L495 AbstractCegarLoop]: Abstraction has has 516 places, 480 transitions, 4093 flow [2024-06-27 23:47:01,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:47:01,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:47:01,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:47:01,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2024-06-27 23:47:01,627 INFO L420 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:47:01,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:47:01,628 INFO L85 PathProgramCache]: Analyzing trace with hash -588636493, now seen corresponding path program 6 times [2024-06-27 23:47:01,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:47:01,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664513684] [2024-06-27 23:47:01,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:47:01,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:47:01,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:47:03,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:47:03,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:47:03,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664513684] [2024-06-27 23:47:03,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664513684] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:47:03,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:47:03,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:47:03,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798934154] [2024-06-27 23:47:03,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:47:03,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:47:03,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:47:03,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:47:03,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:47:03,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:47:03,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 516 places, 480 transitions, 4093 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:47:03,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:47:03,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:47:03,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:47:03,855 INFO L124 PetriNetUnfolderBase]: 841/1533 cut-off events. [2024-06-27 23:47:03,856 INFO L125 PetriNetUnfolderBase]: For 748991/748991 co-relation queries the response was YES. [2024-06-27 23:47:03,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14579 conditions, 1533 events. 841/1533 cut-off events. For 748991/748991 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 8915 event pairs, 46 based on Foata normal form. 1/1533 useless extension candidates. Maximal degree in co-relation 14326. Up to 1056 conditions per place. [2024-06-27 23:47:03,878 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 376 selfloop transitions, 124 changer transitions 0/503 dead transitions. [2024-06-27 23:47:03,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 525 places, 503 transitions, 6597 flow [2024-06-27 23:47:03,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:47:03,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:47:03,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 148 transitions. [2024-06-27 23:47:03,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4484848484848485 [2024-06-27 23:47:03,879 INFO L175 Difference]: Start difference. First operand has 516 places, 480 transitions, 4093 flow. Second operand 10 states and 148 transitions. [2024-06-27 23:47:03,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 525 places, 503 transitions, 6597 flow [2024-06-27 23:47:06,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 516 places, 503 transitions, 6457 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-27 23:47:06,504 INFO L231 Difference]: Finished difference. Result has 517 places, 488 transitions, 4378 flow [2024-06-27 23:47:06,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3953, PETRI_DIFFERENCE_MINUEND_PLACES=507, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=480, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4378, PETRI_PLACES=517, PETRI_TRANSITIONS=488} [2024-06-27 23:47:06,504 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 485 predicate places. [2024-06-27 23:47:06,505 INFO L495 AbstractCegarLoop]: Abstraction has has 517 places, 488 transitions, 4378 flow [2024-06-27 23:47:06,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:47:06,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:47:06,505 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:47:06,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2024-06-27 23:47:06,505 INFO L420 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:47:06,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:47:06,505 INFO L85 PathProgramCache]: Analyzing trace with hash -588636183, now seen corresponding path program 2 times [2024-06-27 23:47:06,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:47:06,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722774440] [2024-06-27 23:47:06,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:47:06,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:47:06,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:47:08,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:47:08,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:47:08,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722774440] [2024-06-27 23:47:08,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722774440] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:47:08,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:47:08,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:47:08,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609549037] [2024-06-27 23:47:08,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:47:08,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:47:08,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:47:08,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:47:08,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:47:08,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:47:08,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 488 transitions, 4378 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:47:08,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:47:08,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:47:08,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:47:09,009 INFO L124 PetriNetUnfolderBase]: 844/1536 cut-off events. [2024-06-27 23:47:09,010 INFO L125 PetriNetUnfolderBase]: For 755090/755090 co-relation queries the response was YES. [2024-06-27 23:47:09,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14752 conditions, 1536 events. 844/1536 cut-off events. For 755090/755090 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 8906 event pairs, 56 based on Foata normal form. 1/1536 useless extension candidates. Maximal degree in co-relation 14499. Up to 1301 conditions per place. [2024-06-27 23:47:09,035 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 435 selfloop transitions, 64 changer transitions 0/502 dead transitions. [2024-06-27 23:47:09,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 527 places, 502 transitions, 5444 flow [2024-06-27 23:47:09,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:47:09,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:47:09,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-27 23:47:09,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4049586776859504 [2024-06-27 23:47:09,036 INFO L175 Difference]: Start difference. First operand has 517 places, 488 transitions, 4378 flow. Second operand 11 states and 147 transitions. [2024-06-27 23:47:09,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 527 places, 502 transitions, 5444 flow [2024-06-27 23:47:11,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 523 places, 502 transitions, 5312 flow, removed 32 selfloop flow, removed 4 redundant places. [2024-06-27 23:47:11,792 INFO L231 Difference]: Finished difference. Result has 524 places, 490 transitions, 4423 flow [2024-06-27 23:47:11,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4246, PETRI_DIFFERENCE_MINUEND_PLACES=513, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4423, PETRI_PLACES=524, PETRI_TRANSITIONS=490} [2024-06-27 23:47:11,793 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 492 predicate places. [2024-06-27 23:47:11,793 INFO L495 AbstractCegarLoop]: Abstraction has has 524 places, 490 transitions, 4423 flow [2024-06-27 23:47:11,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:47:11,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:47:11,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:47:11,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2024-06-27 23:47:11,793 INFO L420 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:47:11,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:47:11,794 INFO L85 PathProgramCache]: Analyzing trace with hash -816956391, now seen corresponding path program 11 times [2024-06-27 23:47:11,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:47:11,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091344496] [2024-06-27 23:47:11,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:47:11,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:47:11,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:47:13,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:47:13,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:47:13,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091344496] [2024-06-27 23:47:13,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091344496] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:47:13,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:47:13,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:47:13,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291903575] [2024-06-27 23:47:13,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:47:13,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:47:13,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:47:13,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:47:13,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:47:13,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:47:13,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 524 places, 490 transitions, 4423 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:47:13,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:47:13,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:47:13,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:47:14,510 INFO L124 PetriNetUnfolderBase]: 852/1553 cut-off events. [2024-06-27 23:47:14,510 INFO L125 PetriNetUnfolderBase]: For 785418/785418 co-relation queries the response was YES. [2024-06-27 23:47:14,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15200 conditions, 1553 events. 852/1553 cut-off events. For 785418/785418 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 9038 event pairs, 54 based on Foata normal form. 1/1553 useless extension candidates. Maximal degree in co-relation 14944. Up to 1241 conditions per place. [2024-06-27 23:47:14,535 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 416 selfloop transitions, 87 changer transitions 0/506 dead transitions. [2024-06-27 23:47:14,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 535 places, 506 transitions, 6011 flow [2024-06-27 23:47:14,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:47:14,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:47:14,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 158 transitions. [2024-06-27 23:47:14,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.398989898989899 [2024-06-27 23:47:14,537 INFO L175 Difference]: Start difference. First operand has 524 places, 490 transitions, 4423 flow. Second operand 12 states and 158 transitions. [2024-06-27 23:47:14,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 535 places, 506 transitions, 6011 flow [2024-06-27 23:47:17,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 526 places, 506 transitions, 5850 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-27 23:47:17,764 INFO L231 Difference]: Finished difference. Result has 527 places, 494 transitions, 4561 flow [2024-06-27 23:47:17,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4262, PETRI_DIFFERENCE_MINUEND_PLACES=515, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4561, PETRI_PLACES=527, PETRI_TRANSITIONS=494} [2024-06-27 23:47:17,765 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 495 predicate places. [2024-06-27 23:47:17,765 INFO L495 AbstractCegarLoop]: Abstraction has has 527 places, 494 transitions, 4561 flow [2024-06-27 23:47:17,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:47:17,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:47:17,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:47:17,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2024-06-27 23:47:17,766 INFO L420 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:47:17,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:47:17,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1820456989, now seen corresponding path program 7 times [2024-06-27 23:47:17,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:47:17,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379091887] [2024-06-27 23:47:17,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:47:17,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:47:17,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:47:19,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:47:19,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:47:19,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379091887] [2024-06-27 23:47:19,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379091887] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:47:19,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:47:19,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:47:19,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101066644] [2024-06-27 23:47:19,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:47:19,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:47:19,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:47:19,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:47:19,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:47:19,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:47:19,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 527 places, 494 transitions, 4561 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:47:19,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:47:19,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:47:19,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:47:19,924 INFO L124 PetriNetUnfolderBase]: 855/1558 cut-off events. [2024-06-27 23:47:19,924 INFO L125 PetriNetUnfolderBase]: For 793026/793026 co-relation queries the response was YES. [2024-06-27 23:47:19,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15312 conditions, 1558 events. 855/1558 cut-off events. For 793026/793026 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 9071 event pairs, 46 based on Foata normal form. 1/1558 useless extension candidates. Maximal degree in co-relation 15055. Up to 1078 conditions per place. [2024-06-27 23:47:19,951 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 384 selfloop transitions, 124 changer transitions 0/511 dead transitions. [2024-06-27 23:47:19,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 536 places, 511 transitions, 6965 flow [2024-06-27 23:47:19,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:47:19,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:47:19,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 149 transitions. [2024-06-27 23:47:19,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45151515151515154 [2024-06-27 23:47:19,953 INFO L175 Difference]: Start difference. First operand has 527 places, 494 transitions, 4561 flow. Second operand 10 states and 149 transitions. [2024-06-27 23:47:19,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 536 places, 511 transitions, 6965 flow [2024-06-27 23:47:23,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 528 places, 511 transitions, 6798 flow, removed 34 selfloop flow, removed 8 redundant places. [2024-06-27 23:47:23,420 INFO L231 Difference]: Finished difference. Result has 529 places, 496 transitions, 4682 flow [2024-06-27 23:47:23,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4394, PETRI_DIFFERENCE_MINUEND_PLACES=519, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4682, PETRI_PLACES=529, PETRI_TRANSITIONS=496} [2024-06-27 23:47:23,420 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 497 predicate places. [2024-06-27 23:47:23,420 INFO L495 AbstractCegarLoop]: Abstraction has has 529 places, 496 transitions, 4682 flow [2024-06-27 23:47:23,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:47:23,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:47:23,421 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:47:23,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2024-06-27 23:47:23,421 INFO L420 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:47:23,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:47:23,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1820687877, now seen corresponding path program 12 times [2024-06-27 23:47:23,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:47:23,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947254992] [2024-06-27 23:47:23,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:47:23,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:47:23,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:47:25,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:47:25,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:47:25,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947254992] [2024-06-27 23:47:25,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947254992] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:47:25,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:47:25,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:47:25,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102354531] [2024-06-27 23:47:25,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:47:25,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:47:25,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:47:25,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:47:25,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:47:25,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:47:25,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 529 places, 496 transitions, 4682 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:47:25,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:47:25,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:47:25,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:47:25,984 INFO L124 PetriNetUnfolderBase]: 868/1583 cut-off events. [2024-06-27 23:47:25,984 INFO L125 PetriNetUnfolderBase]: For 849363/849363 co-relation queries the response was YES. [2024-06-27 23:47:26,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16159 conditions, 1583 events. 868/1583 cut-off events. For 849363/849363 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 9247 event pairs, 54 based on Foata normal form. 1/1583 useless extension candidates. Maximal degree in co-relation 15901. Up to 1214 conditions per place. [2024-06-27 23:47:26,011 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 407 selfloop transitions, 106 changer transitions 0/516 dead transitions. [2024-06-27 23:47:26,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 540 places, 516 transitions, 7210 flow [2024-06-27 23:47:26,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:47:26,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:47:26,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 160 transitions. [2024-06-27 23:47:26,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40404040404040403 [2024-06-27 23:47:26,012 INFO L175 Difference]: Start difference. First operand has 529 places, 496 transitions, 4682 flow. Second operand 12 states and 160 transitions. [2024-06-27 23:47:26,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 540 places, 516 transitions, 7210 flow [2024-06-27 23:47:29,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 533 places, 516 transitions, 6952 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-27 23:47:29,462 INFO L231 Difference]: Finished difference. Result has 534 places, 502 transitions, 4785 flow [2024-06-27 23:47:29,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4424, PETRI_DIFFERENCE_MINUEND_PLACES=522, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4785, PETRI_PLACES=534, PETRI_TRANSITIONS=502} [2024-06-27 23:47:29,462 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 502 predicate places. [2024-06-27 23:47:29,462 INFO L495 AbstractCegarLoop]: Abstraction has has 534 places, 502 transitions, 4785 flow [2024-06-27 23:47:29,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:47:29,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:47:29,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:47:29,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2024-06-27 23:47:29,463 INFO L420 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:47:29,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:47:29,463 INFO L85 PathProgramCache]: Analyzing trace with hash -2048589027, now seen corresponding path program 13 times [2024-06-27 23:47:29,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:47:29,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940426318] [2024-06-27 23:47:29,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:47:29,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:47:29,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:47:31,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:47:31,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:47:31,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940426318] [2024-06-27 23:47:31,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940426318] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:47:31,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:47:31,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:47:31,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337846714] [2024-06-27 23:47:31,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:47:31,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:47:31,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:47:31,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:47:31,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:47:31,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:47:31,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 534 places, 502 transitions, 4785 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:47:31,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:47:31,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:47:31,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:47:31,988 INFO L124 PetriNetUnfolderBase]: 876/1596 cut-off events. [2024-06-27 23:47:31,988 INFO L125 PetriNetUnfolderBase]: For 884664/884664 co-relation queries the response was YES. [2024-06-27 23:47:32,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16511 conditions, 1596 events. 876/1596 cut-off events. For 884664/884664 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 9318 event pairs, 48 based on Foata normal form. 1/1596 useless extension candidates. Maximal degree in co-relation 16251. Up to 1224 conditions per place. [2024-06-27 23:47:32,015 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 409 selfloop transitions, 107 changer transitions 0/519 dead transitions. [2024-06-27 23:47:32,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 545 places, 519 transitions, 6839 flow [2024-06-27 23:47:32,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:47:32,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:47:32,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 160 transitions. [2024-06-27 23:47:32,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40404040404040403 [2024-06-27 23:47:32,017 INFO L175 Difference]: Start difference. First operand has 534 places, 502 transitions, 4785 flow. Second operand 12 states and 160 transitions. [2024-06-27 23:47:32,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 545 places, 519 transitions, 6839 flow [2024-06-27 23:47:37,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 538 places, 519 transitions, 6655 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-27 23:47:37,443 INFO L231 Difference]: Finished difference. Result has 539 places, 506 transitions, 4924 flow [2024-06-27 23:47:37,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4605, PETRI_DIFFERENCE_MINUEND_PLACES=527, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4924, PETRI_PLACES=539, PETRI_TRANSITIONS=506} [2024-06-27 23:47:37,443 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 507 predicate places. [2024-06-27 23:47:37,443 INFO L495 AbstractCegarLoop]: Abstraction has has 539 places, 506 transitions, 4924 flow [2024-06-27 23:47:37,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:47:37,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:47:37,444 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:47:37,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2024-06-27 23:47:37,444 INFO L420 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:47:37,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:47:37,445 INFO L85 PathProgramCache]: Analyzing trace with hash -2048595537, now seen corresponding path program 14 times [2024-06-27 23:47:37,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:47:37,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548278307] [2024-06-27 23:47:37,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:47:37,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:47:37,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:47:39,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:47:39,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:47:39,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548278307] [2024-06-27 23:47:39,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548278307] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:47:39,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:47:39,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:47:39,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47397710] [2024-06-27 23:47:39,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:47:39,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:47:39,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:47:39,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:47:39,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:47:39,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:47:39,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 539 places, 506 transitions, 4924 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:47:39,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:47:39,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:47:39,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:47:40,014 INFO L124 PetriNetUnfolderBase]: 874/1593 cut-off events. [2024-06-27 23:47:40,014 INFO L125 PetriNetUnfolderBase]: For 865669/865669 co-relation queries the response was YES. [2024-06-27 23:47:40,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16281 conditions, 1593 events. 874/1593 cut-off events. For 865669/865669 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 9353 event pairs, 52 based on Foata normal form. 1/1593 useless extension candidates. Maximal degree in co-relation 16020. Up to 1222 conditions per place. [2024-06-27 23:47:40,043 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 409 selfloop transitions, 106 changer transitions 0/518 dead transitions. [2024-06-27 23:47:40,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 550 places, 518 transitions, 6428 flow [2024-06-27 23:47:40,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:47:40,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:47:40,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 160 transitions. [2024-06-27 23:47:40,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40404040404040403 [2024-06-27 23:47:40,044 INFO L175 Difference]: Start difference. First operand has 539 places, 506 transitions, 4924 flow. Second operand 12 states and 160 transitions. [2024-06-27 23:47:40,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 550 places, 518 transitions, 6428 flow [2024-06-27 23:47:44,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 542 places, 518 transitions, 6170 flow, removed 40 selfloop flow, removed 8 redundant places. [2024-06-27 23:47:44,171 INFO L231 Difference]: Finished difference. Result has 543 places, 506 transitions, 4883 flow [2024-06-27 23:47:44,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4666, PETRI_DIFFERENCE_MINUEND_PLACES=531, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4883, PETRI_PLACES=543, PETRI_TRANSITIONS=506} [2024-06-27 23:47:44,171 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 511 predicate places. [2024-06-27 23:47:44,171 INFO L495 AbstractCegarLoop]: Abstraction has has 543 places, 506 transitions, 4883 flow [2024-06-27 23:47:44,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:47:44,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:47:44,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:47:44,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2024-06-27 23:47:44,172 INFO L420 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:47:44,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:47:44,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1820457237, now seen corresponding path program 15 times [2024-06-27 23:47:44,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:47:44,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349116804] [2024-06-27 23:47:44,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:47:44,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:47:44,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:47:45,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:47:45,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:47:45,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349116804] [2024-06-27 23:47:45,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349116804] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:47:45,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:47:45,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:47:45,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997313354] [2024-06-27 23:47:45,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:47:45,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:47:45,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:47:45,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:47:45,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:47:45,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:47:45,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 543 places, 506 transitions, 4883 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:47:45,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:47:45,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:47:45,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:47:46,315 INFO L124 PetriNetUnfolderBase]: 877/1600 cut-off events. [2024-06-27 23:47:46,315 INFO L125 PetriNetUnfolderBase]: For 871244/871244 co-relation queries the response was YES. [2024-06-27 23:47:46,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16318 conditions, 1600 events. 877/1600 cut-off events. For 871244/871244 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 9404 event pairs, 54 based on Foata normal form. 1/1600 useless extension candidates. Maximal degree in co-relation 16056. Up to 1226 conditions per place. [2024-06-27 23:47:46,344 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 408 selfloop transitions, 111 changer transitions 0/522 dead transitions. [2024-06-27 23:47:46,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 554 places, 522 transitions, 7353 flow [2024-06-27 23:47:46,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:47:46,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:47:46,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 161 transitions. [2024-06-27 23:47:46,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4065656565656566 [2024-06-27 23:47:46,345 INFO L175 Difference]: Start difference. First operand has 543 places, 506 transitions, 4883 flow. Second operand 12 states and 161 transitions. [2024-06-27 23:47:46,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 554 places, 522 transitions, 7353 flow [2024-06-27 23:47:50,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 543 places, 522 transitions, 7131 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-27 23:47:50,777 INFO L231 Difference]: Finished difference. Result has 544 places, 508 transitions, 4944 flow [2024-06-27 23:47:50,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4665, PETRI_DIFFERENCE_MINUEND_PLACES=532, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4944, PETRI_PLACES=544, PETRI_TRANSITIONS=508} [2024-06-27 23:47:50,777 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 512 predicate places. [2024-06-27 23:47:50,777 INFO L495 AbstractCegarLoop]: Abstraction has has 544 places, 508 transitions, 4944 flow [2024-06-27 23:47:50,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:47:50,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:47:50,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:47:50,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2024-06-27 23:47:50,778 INFO L420 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:47:50,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:47:50,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1820694387, now seen corresponding path program 16 times [2024-06-27 23:47:50,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:47:50,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943327787] [2024-06-27 23:47:50,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:47:50,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:47:50,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:47:52,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:47:52,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:47:52,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943327787] [2024-06-27 23:47:52,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943327787] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:47:52,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:47:52,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:47:52,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989138297] [2024-06-27 23:47:52,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:47:52,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:47:52,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:47:52,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:47:52,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:47:52,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:47:52,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 544 places, 508 transitions, 4944 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:47:52,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:47:52,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:47:52,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:47:53,350 INFO L124 PetriNetUnfolderBase]: 875/1597 cut-off events. [2024-06-27 23:47:53,350 INFO L125 PetriNetUnfolderBase]: For 855761/855761 co-relation queries the response was YES. [2024-06-27 23:47:53,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16105 conditions, 1597 events. 875/1597 cut-off events. For 855761/855761 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 9368 event pairs, 54 based on Foata normal form. 1/1597 useless extension candidates. Maximal degree in co-relation 15842. Up to 1224 conditions per place. [2024-06-27 23:47:53,379 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 404 selfloop transitions, 114 changer transitions 0/521 dead transitions. [2024-06-27 23:47:53,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 555 places, 521 transitions, 6910 flow [2024-06-27 23:47:53,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:47:53,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:47:53,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 158 transitions. [2024-06-27 23:47:53,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.398989898989899 [2024-06-27 23:47:53,380 INFO L175 Difference]: Start difference. First operand has 544 places, 508 transitions, 4944 flow. Second operand 12 states and 158 transitions. [2024-06-27 23:47:53,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 555 places, 521 transitions, 6910 flow [2024-06-27 23:47:57,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 546 places, 521 transitions, 6623 flow, removed 39 selfloop flow, removed 9 redundant places. [2024-06-27 23:47:57,542 INFO L231 Difference]: Finished difference. Result has 547 places, 508 transitions, 4890 flow [2024-06-27 23:47:57,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4657, PETRI_DIFFERENCE_MINUEND_PLACES=535, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4890, PETRI_PLACES=547, PETRI_TRANSITIONS=508} [2024-06-27 23:47:57,542 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 515 predicate places. [2024-06-27 23:47:57,543 INFO L495 AbstractCegarLoop]: Abstraction has has 547 places, 508 transitions, 4890 flow [2024-06-27 23:47:57,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:47:57,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:47:57,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:47:57,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2024-06-27 23:47:57,543 INFO L420 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:47:57,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:47:57,543 INFO L85 PathProgramCache]: Analyzing trace with hash -580592923, now seen corresponding path program 8 times [2024-06-27 23:47:57,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:47:57,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234578759] [2024-06-27 23:47:57,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:47:57,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:47:57,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:47:58,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:47:58,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:47:58,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234578759] [2024-06-27 23:47:58,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234578759] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:47:58,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:47:58,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:47:58,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284700900] [2024-06-27 23:47:58,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:47:58,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:47:58,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:47:58,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:47:58,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:47:59,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:47:59,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 547 places, 508 transitions, 4890 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:47:59,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:47:59,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:47:59,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:47:59,636 INFO L124 PetriNetUnfolderBase]: 883/1610 cut-off events. [2024-06-27 23:47:59,637 INFO L125 PetriNetUnfolderBase]: For 888435/888435 co-relation queries the response was YES. [2024-06-27 23:47:59,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16414 conditions, 1610 events. 883/1610 cut-off events. For 888435/888435 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 9468 event pairs, 46 based on Foata normal form. 1/1610 useless extension candidates. Maximal degree in co-relation 16150. Up to 1121 conditions per place. [2024-06-27 23:47:59,665 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 377 selfloop transitions, 147 changer transitions 0/527 dead transitions. [2024-06-27 23:47:59,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 556 places, 527 transitions, 7404 flow [2024-06-27 23:47:59,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:47:59,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:47:59,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 147 transitions. [2024-06-27 23:47:59,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44545454545454544 [2024-06-27 23:47:59,666 INFO L175 Difference]: Start difference. First operand has 547 places, 508 transitions, 4890 flow. Second operand 10 states and 147 transitions. [2024-06-27 23:47:59,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 556 places, 527 transitions, 7404 flow [2024-06-27 23:48:04,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 547 places, 527 transitions, 7244 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 23:48:04,076 INFO L231 Difference]: Finished difference. Result has 548 places, 512 transitions, 5105 flow [2024-06-27 23:48:04,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4730, PETRI_DIFFERENCE_MINUEND_PLACES=538, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5105, PETRI_PLACES=548, PETRI_TRANSITIONS=512} [2024-06-27 23:48:04,077 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 516 predicate places. [2024-06-27 23:48:04,077 INFO L495 AbstractCegarLoop]: Abstraction has has 548 places, 512 transitions, 5105 flow [2024-06-27 23:48:04,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:48:04,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:48:04,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:48:04,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2024-06-27 23:48:04,078 INFO L420 AbstractCegarLoop]: === Iteration 228 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:48:04,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:48:04,078 INFO L85 PathProgramCache]: Analyzing trace with hash -816776653, now seen corresponding path program 9 times [2024-06-27 23:48:04,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:48:04,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658553107] [2024-06-27 23:48:04,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:48:04,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:48:04,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:48:05,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:48:05,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:48:05,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658553107] [2024-06-27 23:48:05,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658553107] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:48:05,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:48:05,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:48:05,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576078083] [2024-06-27 23:48:05,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:48:05,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:48:05,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:48:05,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:48:05,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:48:05,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:48:05,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 548 places, 512 transitions, 5105 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:48:05,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:48:05,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:48:05,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:48:06,046 INFO L124 PetriNetUnfolderBase]: 886/1615 cut-off events. [2024-06-27 23:48:06,046 INFO L125 PetriNetUnfolderBase]: For 896675/896675 co-relation queries the response was YES. [2024-06-27 23:48:06,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16608 conditions, 1615 events. 886/1615 cut-off events. For 896675/896675 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 9482 event pairs, 46 based on Foata normal form. 1/1615 useless extension candidates. Maximal degree in co-relation 16344. Up to 1125 conditions per place. [2024-06-27 23:48:06,075 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 395 selfloop transitions, 129 changer transitions 0/527 dead transitions. [2024-06-27 23:48:06,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 557 places, 527 transitions, 6685 flow [2024-06-27 23:48:06,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:48:06,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:48:06,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 146 transitions. [2024-06-27 23:48:06,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44242424242424244 [2024-06-27 23:48:06,080 INFO L175 Difference]: Start difference. First operand has 548 places, 512 transitions, 5105 flow. Second operand 10 states and 146 transitions. [2024-06-27 23:48:06,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 557 places, 527 transitions, 6685 flow [2024-06-27 23:48:10,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 551 places, 527 transitions, 6424 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-27 23:48:10,540 INFO L231 Difference]: Finished difference. Result has 552 places, 514 transitions, 5156 flow [2024-06-27 23:48:10,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4848, PETRI_DIFFERENCE_MINUEND_PLACES=542, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5156, PETRI_PLACES=552, PETRI_TRANSITIONS=514} [2024-06-27 23:48:10,540 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 520 predicate places. [2024-06-27 23:48:10,541 INFO L495 AbstractCegarLoop]: Abstraction has has 552 places, 514 transitions, 5156 flow [2024-06-27 23:48:10,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:48:10,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:48:10,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:48:10,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2024-06-27 23:48:10,541 INFO L420 AbstractCegarLoop]: === Iteration 229 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:48:10,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:48:10,541 INFO L85 PathProgramCache]: Analyzing trace with hash -2042339427, now seen corresponding path program 17 times [2024-06-27 23:48:10,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:48:10,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806463272] [2024-06-27 23:48:10,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:48:10,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:48:10,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:48:12,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:48:12,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:48:12,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806463272] [2024-06-27 23:48:12,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806463272] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:48:12,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:48:12,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:48:12,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113574831] [2024-06-27 23:48:12,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:48:12,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:48:12,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:48:12,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:48:12,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:48:12,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:48:12,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 552 places, 514 transitions, 5156 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:48:12,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:48:12,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:48:12,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:48:12,924 INFO L124 PetriNetUnfolderBase]: 889/1622 cut-off events. [2024-06-27 23:48:12,924 INFO L125 PetriNetUnfolderBase]: For 905000/905000 co-relation queries the response was YES. [2024-06-27 23:48:12,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16675 conditions, 1622 events. 889/1622 cut-off events. For 905000/905000 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 9574 event pairs, 54 based on Foata normal form. 1/1622 useless extension candidates. Maximal degree in co-relation 16410. Up to 1246 conditions per place. [2024-06-27 23:48:12,956 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 418 selfloop transitions, 108 changer transitions 0/529 dead transitions. [2024-06-27 23:48:12,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 563 places, 529 transitions, 7204 flow [2024-06-27 23:48:12,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:48:12,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:48:12,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 162 transitions. [2024-06-27 23:48:12,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-27 23:48:12,959 INFO L175 Difference]: Start difference. First operand has 552 places, 514 transitions, 5156 flow. Second operand 12 states and 162 transitions. [2024-06-27 23:48:12,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 563 places, 529 transitions, 7204 flow [2024-06-27 23:48:17,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 555 places, 529 transitions, 6900 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-27 23:48:17,407 INFO L231 Difference]: Finished difference. Result has 556 places, 516 transitions, 5127 flow [2024-06-27 23:48:17,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4852, PETRI_DIFFERENCE_MINUEND_PLACES=544, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5127, PETRI_PLACES=556, PETRI_TRANSITIONS=516} [2024-06-27 23:48:17,408 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 524 predicate places. [2024-06-27 23:48:17,408 INFO L495 AbstractCegarLoop]: Abstraction has has 556 places, 516 transitions, 5127 flow [2024-06-27 23:48:17,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:48:17,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:48:17,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:48:17,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2024-06-27 23:48:17,409 INFO L420 AbstractCegarLoop]: === Iteration 230 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:48:17,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:48:17,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1820687629, now seen corresponding path program 10 times [2024-06-27 23:48:17,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:48:17,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884218170] [2024-06-27 23:48:17,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:48:17,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:48:17,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:48:18,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:48:18,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:48:18,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884218170] [2024-06-27 23:48:18,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884218170] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:48:18,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:48:18,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:48:18,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250390319] [2024-06-27 23:48:18,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:48:18,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:48:18,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:48:18,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:48:18,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:48:19,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:48:19,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 556 places, 516 transitions, 5127 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:48:19,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:48:19,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:48:19,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:48:19,666 INFO L124 PetriNetUnfolderBase]: 887/1619 cut-off events. [2024-06-27 23:48:19,666 INFO L125 PetriNetUnfolderBase]: For 886865/886865 co-relation queries the response was YES. [2024-06-27 23:48:19,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16292 conditions, 1619 events. 887/1619 cut-off events. For 886865/886865 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 9542 event pairs, 46 based on Foata normal form. 1/1619 useless extension candidates. Maximal degree in co-relation 16026. Up to 1128 conditions per place. [2024-06-27 23:48:19,694 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 393 selfloop transitions, 134 changer transitions 0/530 dead transitions. [2024-06-27 23:48:19,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 565 places, 530 transitions, 7129 flow [2024-06-27 23:48:19,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:48:19,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:48:19,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 146 transitions. [2024-06-27 23:48:19,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44242424242424244 [2024-06-27 23:48:19,696 INFO L175 Difference]: Start difference. First operand has 556 places, 516 transitions, 5127 flow. Second operand 10 states and 146 transitions. [2024-06-27 23:48:19,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 565 places, 530 transitions, 7129 flow [2024-06-27 23:48:23,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 552 places, 530 transitions, 6678 flow, removed 32 selfloop flow, removed 13 redundant places. [2024-06-27 23:48:23,916 INFO L231 Difference]: Finished difference. Result has 553 places, 516 transitions, 4950 flow [2024-06-27 23:48:23,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4676, PETRI_DIFFERENCE_MINUEND_PLACES=543, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4950, PETRI_PLACES=553, PETRI_TRANSITIONS=516} [2024-06-27 23:48:23,916 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 521 predicate places. [2024-06-27 23:48:23,916 INFO L495 AbstractCegarLoop]: Abstraction has has 553 places, 516 transitions, 4950 flow [2024-06-27 23:48:23,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:48:23,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:48:23,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:48:23,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2024-06-27 23:48:23,917 INFO L420 AbstractCegarLoop]: === Iteration 231 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:48:23,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:48:23,917 INFO L85 PathProgramCache]: Analyzing trace with hash -39573229, now seen corresponding path program 3 times [2024-06-27 23:48:23,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:48:23,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054589821] [2024-06-27 23:48:23,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:48:23,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:48:23,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:48:25,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:48:25,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:48:25,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054589821] [2024-06-27 23:48:25,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054589821] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:48:25,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:48:25,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:48:25,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960771165] [2024-06-27 23:48:25,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:48:25,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:48:25,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:48:25,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:48:25,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:48:25,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:48:25,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 553 places, 516 transitions, 4950 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:48:25,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:48:25,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:48:25,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:48:26,057 INFO L124 PetriNetUnfolderBase]: 890/1624 cut-off events. [2024-06-27 23:48:26,058 INFO L125 PetriNetUnfolderBase]: For 893302/893302 co-relation queries the response was YES. [2024-06-27 23:48:26,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16311 conditions, 1624 events. 890/1624 cut-off events. For 893302/893302 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 9617 event pairs, 56 based on Foata normal form. 1/1624 useless extension candidates. Maximal degree in co-relation 16045. Up to 1377 conditions per place. [2024-06-27 23:48:26,086 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 459 selfloop transitions, 68 changer transitions 0/530 dead transitions. [2024-06-27 23:48:26,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 562 places, 530 transitions, 6076 flow [2024-06-27 23:48:26,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:48:26,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:48:26,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-06-27 23:48:26,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41818181818181815 [2024-06-27 23:48:26,088 INFO L175 Difference]: Start difference. First operand has 553 places, 516 transitions, 4950 flow. Second operand 10 states and 138 transitions. [2024-06-27 23:48:26,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 562 places, 530 transitions, 6076 flow [2024-06-27 23:48:30,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 553 places, 530 transitions, 5815 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 23:48:30,185 INFO L231 Difference]: Finished difference. Result has 554 places, 518 transitions, 4878 flow [2024-06-27 23:48:30,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4689, PETRI_DIFFERENCE_MINUEND_PLACES=544, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=448, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4878, PETRI_PLACES=554, PETRI_TRANSITIONS=518} [2024-06-27 23:48:30,186 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 522 predicate places. [2024-06-27 23:48:30,186 INFO L495 AbstractCegarLoop]: Abstraction has has 554 places, 518 transitions, 4878 flow [2024-06-27 23:48:30,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:48:30,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:48:30,186 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:48:30,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2024-06-27 23:48:30,186 INFO L420 AbstractCegarLoop]: === Iteration 232 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:48:30,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:48:30,187 INFO L85 PathProgramCache]: Analyzing trace with hash -810520543, now seen corresponding path program 11 times [2024-06-27 23:48:30,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:48:30,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225214297] [2024-06-27 23:48:30,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:48:30,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:48:30,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:48:31,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:48:31,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:48:31,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225214297] [2024-06-27 23:48:31,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225214297] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:48:31,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:48:31,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:48:31,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544762003] [2024-06-27 23:48:31,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:48:31,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:48:31,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:48:31,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:48:31,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:48:31,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:48:31,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 554 places, 518 transitions, 4878 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:48:31,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:48:31,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:48:31,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:48:32,100 INFO L124 PetriNetUnfolderBase]: 893/1629 cut-off events. [2024-06-27 23:48:32,100 INFO L125 PetriNetUnfolderBase]: For 900175/900175 co-relation queries the response was YES. [2024-06-27 23:48:32,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16276 conditions, 1629 events. 893/1629 cut-off events. For 900175/900175 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 9645 event pairs, 46 based on Foata normal form. 1/1629 useless extension candidates. Maximal degree in co-relation 16009. Up to 1137 conditions per place. [2024-06-27 23:48:32,129 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 409 selfloop transitions, 122 changer transitions 0/534 dead transitions. [2024-06-27 23:48:32,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 563 places, 534 transitions, 6934 flow [2024-06-27 23:48:32,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:48:32,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:48:32,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 150 transitions. [2024-06-27 23:48:32,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-27 23:48:32,131 INFO L175 Difference]: Start difference. First operand has 554 places, 518 transitions, 4878 flow. Second operand 10 states and 150 transitions. [2024-06-27 23:48:32,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 563 places, 534 transitions, 6934 flow [2024-06-27 23:48:36,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 555 places, 534 transitions, 6761 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-27 23:48:36,235 INFO L231 Difference]: Finished difference. Result has 556 places, 520 transitions, 4993 flow [2024-06-27 23:48:36,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4705, PETRI_DIFFERENCE_MINUEND_PLACES=546, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4993, PETRI_PLACES=556, PETRI_TRANSITIONS=520} [2024-06-27 23:48:36,236 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 524 predicate places. [2024-06-27 23:48:36,236 INFO L495 AbstractCegarLoop]: Abstraction has has 556 places, 520 transitions, 4993 flow [2024-06-27 23:48:36,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:48:36,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:48:36,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:48:36,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2024-06-27 23:48:36,236 INFO L420 AbstractCegarLoop]: === Iteration 233 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:48:36,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:48:36,236 INFO L85 PathProgramCache]: Analyzing trace with hash -810520791, now seen corresponding path program 18 times [2024-06-27 23:48:36,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:48:36,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562340291] [2024-06-27 23:48:36,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:48:36,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:48:36,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:48:37,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:48:37,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:48:37,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562340291] [2024-06-27 23:48:37,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562340291] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:48:37,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:48:37,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:48:37,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043517181] [2024-06-27 23:48:37,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:48:37,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:48:37,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:48:37,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:48:37,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:48:38,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:48:38,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 556 places, 520 transitions, 4993 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:48:38,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:48:38,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:48:38,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:48:38,618 INFO L124 PetriNetUnfolderBase]: 896/1636 cut-off events. [2024-06-27 23:48:38,618 INFO L125 PetriNetUnfolderBase]: For 908459/908459 co-relation queries the response was YES. [2024-06-27 23:48:38,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16447 conditions, 1636 events. 896/1636 cut-off events. For 908459/908459 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 9721 event pairs, 54 based on Foata normal form. 1/1636 useless extension candidates. Maximal degree in co-relation 16179. Up to 1349 conditions per place. [2024-06-27 23:48:38,648 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 453 selfloop transitions, 77 changer transitions 0/533 dead transitions. [2024-06-27 23:48:38,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 566 places, 533 transitions, 6127 flow [2024-06-27 23:48:38,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:48:38,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:48:38,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 150 transitions. [2024-06-27 23:48:38,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4132231404958678 [2024-06-27 23:48:38,649 INFO L175 Difference]: Start difference. First operand has 556 places, 520 transitions, 4993 flow. Second operand 11 states and 150 transitions. [2024-06-27 23:48:38,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 566 places, 533 transitions, 6127 flow [2024-06-27 23:48:43,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 557 places, 533 transitions, 5751 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-27 23:48:43,215 INFO L231 Difference]: Finished difference. Result has 558 places, 522 transitions, 4828 flow [2024-06-27 23:48:43,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4617, PETRI_DIFFERENCE_MINUEND_PLACES=547, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4828, PETRI_PLACES=558, PETRI_TRANSITIONS=522} [2024-06-27 23:48:43,215 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 526 predicate places. [2024-06-27 23:48:43,215 INFO L495 AbstractCegarLoop]: Abstraction has has 558 places, 522 transitions, 4828 flow [2024-06-27 23:48:43,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:48:43,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:48:43,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:48:43,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2024-06-27 23:48:43,216 INFO L420 AbstractCegarLoop]: === Iteration 234 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:48:43,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:48:43,217 INFO L85 PathProgramCache]: Analyzing trace with hash -39284929, now seen corresponding path program 4 times [2024-06-27 23:48:43,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:48:43,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251547409] [2024-06-27 23:48:43,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:48:43,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:48:43,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:48:44,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:48:44,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:48:44,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251547409] [2024-06-27 23:48:44,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251547409] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:48:44,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:48:44,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:48:44,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67496867] [2024-06-27 23:48:44,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:48:44,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:48:44,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:48:44,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:48:44,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:48:45,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:48:45,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 558 places, 522 transitions, 4828 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:48:45,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:48:45,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:48:45,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:48:45,578 INFO L124 PetriNetUnfolderBase]: 899/1641 cut-off events. [2024-06-27 23:48:45,579 INFO L125 PetriNetUnfolderBase]: For 916034/916034 co-relation queries the response was YES. [2024-06-27 23:48:45,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16368 conditions, 1641 events. 899/1641 cut-off events. For 916034/916034 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 9745 event pairs, 56 based on Foata normal form. 1/1641 useless extension candidates. Maximal degree in co-relation 16098. Up to 1392 conditions per place. [2024-06-27 23:48:45,607 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 457 selfloop transitions, 76 changer transitions 0/536 dead transitions. [2024-06-27 23:48:45,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 568 places, 536 transitions, 5970 flow [2024-06-27 23:48:45,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:48:45,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:48:45,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-27 23:48:45,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39944903581267216 [2024-06-27 23:48:45,608 INFO L175 Difference]: Start difference. First operand has 558 places, 522 transitions, 4828 flow. Second operand 11 states and 145 transitions. [2024-06-27 23:48:45,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 568 places, 536 transitions, 5970 flow [2024-06-27 23:48:50,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 559 places, 536 transitions, 5779 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-27 23:48:50,060 INFO L231 Difference]: Finished difference. Result has 560 places, 524 transitions, 4846 flow [2024-06-27 23:48:50,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4637, PETRI_DIFFERENCE_MINUEND_PLACES=549, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=446, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4846, PETRI_PLACES=560, PETRI_TRANSITIONS=524} [2024-06-27 23:48:50,061 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 528 predicate places. [2024-06-27 23:48:50,061 INFO L495 AbstractCegarLoop]: Abstraction has has 560 places, 524 transitions, 4846 flow [2024-06-27 23:48:50,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:48:50,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:48:50,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:48:50,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2024-06-27 23:48:50,061 INFO L420 AbstractCegarLoop]: === Iteration 235 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:48:50,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:48:50,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1812106209, now seen corresponding path program 5 times [2024-06-27 23:48:50,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:48:50,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104529431] [2024-06-27 23:48:50,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:48:50,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:48:50,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:48:51,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:48:51,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:48:51,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104529431] [2024-06-27 23:48:51,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104529431] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:48:51,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:48:51,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:48:51,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279684946] [2024-06-27 23:48:51,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:48:51,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:48:51,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:48:51,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:48:51,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:48:51,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:48:51,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 560 places, 524 transitions, 4846 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:48:51,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:48:51,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:48:51,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:48:52,557 INFO L124 PetriNetUnfolderBase]: 907/1654 cut-off events. [2024-06-27 23:48:52,557 INFO L125 PetriNetUnfolderBase]: For 950467/950467 co-relation queries the response was YES. [2024-06-27 23:48:52,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16773 conditions, 1654 events. 907/1654 cut-off events. For 950467/950467 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 9821 event pairs, 56 based on Foata normal form. 1/1654 useless extension candidates. Maximal degree in co-relation 16502. Up to 1386 conditions per place. [2024-06-27 23:48:52,587 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 451 selfloop transitions, 87 changer transitions 0/541 dead transitions. [2024-06-27 23:48:52,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 570 places, 541 transitions, 6524 flow [2024-06-27 23:48:52,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:48:52,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:48:52,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-27 23:48:52,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4049586776859504 [2024-06-27 23:48:52,588 INFO L175 Difference]: Start difference. First operand has 560 places, 524 transitions, 4846 flow. Second operand 11 states and 147 transitions. [2024-06-27 23:48:52,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 570 places, 541 transitions, 6524 flow [2024-06-27 23:48:57,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 561 places, 541 transitions, 6331 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-27 23:48:57,203 INFO L231 Difference]: Finished difference. Result has 562 places, 528 transitions, 4940 flow [2024-06-27 23:48:57,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4653, PETRI_DIFFERENCE_MINUEND_PLACES=551, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=439, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4940, PETRI_PLACES=562, PETRI_TRANSITIONS=528} [2024-06-27 23:48:57,204 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 530 predicate places. [2024-06-27 23:48:57,204 INFO L495 AbstractCegarLoop]: Abstraction has has 562 places, 528 transitions, 4940 flow [2024-06-27 23:48:57,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:48:57,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:48:57,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:48:57,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2024-06-27 23:48:57,204 INFO L420 AbstractCegarLoop]: === Iteration 236 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:48:57,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:48:57,205 INFO L85 PathProgramCache]: Analyzing trace with hash -2042093349, now seen corresponding path program 6 times [2024-06-27 23:48:57,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:48:57,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976319194] [2024-06-27 23:48:57,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:48:57,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:48:57,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:48:58,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:48:58,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:48:58,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976319194] [2024-06-27 23:48:58,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976319194] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:48:58,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:48:58,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:48:58,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939297767] [2024-06-27 23:48:58,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:48:58,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:48:58,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:48:58,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:48:58,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:48:58,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:48:58,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 562 places, 528 transitions, 4940 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:48:58,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:48:58,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:48:58,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:48:59,570 INFO L124 PetriNetUnfolderBase]: 905/1651 cut-off events. [2024-06-27 23:48:59,570 INFO L125 PetriNetUnfolderBase]: For 931091/931091 co-relation queries the response was YES. [2024-06-27 23:48:59,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16551 conditions, 1651 events. 905/1651 cut-off events. For 931091/931091 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 9808 event pairs, 56 based on Foata normal form. 1/1651 useless extension candidates. Maximal degree in co-relation 16279. Up to 1402 conditions per place. [2024-06-27 23:48:59,601 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 477 selfloop transitions, 60 changer transitions 0/540 dead transitions. [2024-06-27 23:48:59,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 571 places, 540 transitions, 6042 flow [2024-06-27 23:48:59,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:48:59,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:48:59,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 140 transitions. [2024-06-27 23:48:59,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-06-27 23:48:59,602 INFO L175 Difference]: Start difference. First operand has 562 places, 528 transitions, 4940 flow. Second operand 10 states and 140 transitions. [2024-06-27 23:48:59,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 571 places, 540 transitions, 6042 flow [2024-06-27 23:49:04,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 564 places, 540 transitions, 5856 flow, removed 39 selfloop flow, removed 7 redundant places. [2024-06-27 23:49:04,105 INFO L231 Difference]: Finished difference. Result has 565 places, 528 transitions, 4879 flow [2024-06-27 23:49:04,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4754, PETRI_DIFFERENCE_MINUEND_PLACES=555, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4879, PETRI_PLACES=565, PETRI_TRANSITIONS=528} [2024-06-27 23:49:04,105 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 533 predicate places. [2024-06-27 23:49:04,105 INFO L495 AbstractCegarLoop]: Abstraction has has 565 places, 528 transitions, 4879 flow [2024-06-27 23:49:04,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:49:04,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:49:04,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:49:04,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2024-06-27 23:49:04,106 INFO L420 AbstractCegarLoop]: === Iteration 237 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:49:04,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:49:04,106 INFO L85 PathProgramCache]: Analyzing trace with hash -2042102029, now seen corresponding path program 12 times [2024-06-27 23:49:04,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:49:04,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458663057] [2024-06-27 23:49:04,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:49:04,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:49:04,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:49:05,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:49:05,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:49:05,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458663057] [2024-06-27 23:49:05,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458663057] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:49:05,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:49:05,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:49:05,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913756884] [2024-06-27 23:49:05,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:49:05,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:49:05,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:49:05,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:49:05,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:49:05,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:49:05,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 565 places, 528 transitions, 4879 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:49:05,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:49:05,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:49:05,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:49:06,306 INFO L124 PetriNetUnfolderBase]: 908/1656 cut-off events. [2024-06-27 23:49:06,306 INFO L125 PetriNetUnfolderBase]: For 938673/938673 co-relation queries the response was YES. [2024-06-27 23:49:06,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16604 conditions, 1656 events. 908/1656 cut-off events. For 938673/938673 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 9849 event pairs, 46 based on Foata normal form. 1/1656 useless extension candidates. Maximal degree in co-relation 16331. Up to 1161 conditions per place. [2024-06-27 23:49:06,336 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 415 selfloop transitions, 126 changer transitions 0/544 dead transitions. [2024-06-27 23:49:06,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 574 places, 544 transitions, 6973 flow [2024-06-27 23:49:06,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:49:06,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:49:06,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 149 transitions. [2024-06-27 23:49:06,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45151515151515154 [2024-06-27 23:49:06,338 INFO L175 Difference]: Start difference. First operand has 565 places, 528 transitions, 4879 flow. Second operand 10 states and 149 transitions. [2024-06-27 23:49:06,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 574 places, 544 transitions, 6973 flow [2024-06-27 23:49:11,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 565 places, 544 transitions, 6820 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-27 23:49:11,124 INFO L231 Difference]: Finished difference. Result has 566 places, 530 transitions, 5020 flow [2024-06-27 23:49:11,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4726, PETRI_DIFFERENCE_MINUEND_PLACES=556, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5020, PETRI_PLACES=566, PETRI_TRANSITIONS=530} [2024-06-27 23:49:11,125 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 534 predicate places. [2024-06-27 23:49:11,125 INFO L495 AbstractCegarLoop]: Abstraction has has 566 places, 530 transitions, 5020 flow [2024-06-27 23:49:11,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:49:11,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:49:11,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:49:11,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2024-06-27 23:49:11,126 INFO L420 AbstractCegarLoop]: === Iteration 238 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:49:11,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:49:11,127 INFO L85 PathProgramCache]: Analyzing trace with hash 516209247, now seen corresponding path program 1 times [2024-06-27 23:49:11,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:49:11,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215740790] [2024-06-27 23:49:11,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:49:11,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:49:11,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:49:13,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:49:13,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:49:13,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215740790] [2024-06-27 23:49:13,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215740790] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:49:13,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:49:13,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:49:13,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005130826] [2024-06-27 23:49:13,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:49:13,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:49:13,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:49:13,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:49:13,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:49:13,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-06-27 23:49:13,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 566 places, 530 transitions, 5020 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:49:13,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:49:13,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-06-27 23:49:13,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:49:13,788 INFO L124 PetriNetUnfolderBase]: 866/1613 cut-off events. [2024-06-27 23:49:13,788 INFO L125 PetriNetUnfolderBase]: For 998607/998608 co-relation queries the response was YES. [2024-06-27 23:49:13,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16549 conditions, 1613 events. 866/1613 cut-off events. For 998607/998608 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 9794 event pairs, 74 based on Foata normal form. 3/1610 useless extension candidates. Maximal degree in co-relation 16275. Up to 1345 conditions per place. [2024-06-27 23:49:13,818 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 457 selfloop transitions, 27 changer transitions 0/544 dead transitions. [2024-06-27 23:49:13,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 576 places, 544 transitions, 6050 flow [2024-06-27 23:49:13,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:49:13,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:49:13,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 150 transitions. [2024-06-27 23:49:13,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4132231404958678 [2024-06-27 23:49:13,819 INFO L175 Difference]: Start difference. First operand has 566 places, 530 transitions, 5020 flow. Second operand 11 states and 150 transitions. [2024-06-27 23:49:13,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 576 places, 544 transitions, 6050 flow [2024-06-27 23:49:18,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 567 places, 544 transitions, 5691 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-27 23:49:18,100 INFO L231 Difference]: Finished difference. Result has 568 places, 531 transitions, 4753 flow [2024-06-27 23:49:18,100 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4661, PETRI_DIFFERENCE_MINUEND_PLACES=557, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=503, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4753, PETRI_PLACES=568, PETRI_TRANSITIONS=531} [2024-06-27 23:49:18,100 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 536 predicate places. [2024-06-27 23:49:18,101 INFO L495 AbstractCegarLoop]: Abstraction has has 568 places, 531 transitions, 4753 flow [2024-06-27 23:49:18,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:49:18,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:49:18,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:49:18,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2024-06-27 23:49:18,101 INFO L420 AbstractCegarLoop]: === Iteration 239 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:49:18,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:49:18,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1812116749, now seen corresponding path program 13 times [2024-06-27 23:49:18,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:49:18,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908993940] [2024-06-27 23:49:18,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:49:18,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:49:18,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:49:19,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:49:19,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:49:19,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908993940] [2024-06-27 23:49:19,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908993940] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:49:19,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:49:19,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:49:19,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387903015] [2024-06-27 23:49:19,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:49:19,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:49:19,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:49:19,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:49:19,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:49:19,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:49:19,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 568 places, 531 transitions, 4753 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:49:19,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:49:19,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:49:19,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:49:20,510 INFO L124 PetriNetUnfolderBase]: 910/1661 cut-off events. [2024-06-27 23:49:20,510 INFO L125 PetriNetUnfolderBase]: For 926614/926614 co-relation queries the response was YES. [2024-06-27 23:49:20,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16333 conditions, 1661 events. 910/1661 cut-off events. For 926614/926614 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 9882 event pairs, 46 based on Foata normal form. 1/1661 useless extension candidates. Maximal degree in co-relation 16057. Up to 1167 conditions per place. [2024-06-27 23:49:20,534 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 358 selfloop transitions, 183 changer transitions 0/544 dead transitions. [2024-06-27 23:49:20,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 577 places, 544 transitions, 6341 flow [2024-06-27 23:49:20,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:49:20,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:49:20,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 143 transitions. [2024-06-27 23:49:20,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-27 23:49:20,535 INFO L175 Difference]: Start difference. First operand has 568 places, 531 transitions, 4753 flow. Second operand 10 states and 143 transitions. [2024-06-27 23:49:20,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 577 places, 544 transitions, 6341 flow [2024-06-27 23:49:24,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 568 places, 544 transitions, 6235 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-27 23:49:24,773 INFO L231 Difference]: Finished difference. Result has 569 places, 531 transitions, 5018 flow [2024-06-27 23:49:24,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4647, PETRI_DIFFERENCE_MINUEND_PLACES=559, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5018, PETRI_PLACES=569, PETRI_TRANSITIONS=531} [2024-06-27 23:49:24,773 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 537 predicate places. [2024-06-27 23:49:24,773 INFO L495 AbstractCegarLoop]: Abstraction has has 569 places, 531 transitions, 5018 flow [2024-06-27 23:49:24,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:49:24,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:49:24,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:49:24,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2024-06-27 23:49:24,774 INFO L420 AbstractCegarLoop]: === Iteration 240 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:49:24,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:49:24,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1812413667, now seen corresponding path program 19 times [2024-06-27 23:49:24,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:49:24,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878203053] [2024-06-27 23:49:24,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:49:24,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:49:24,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:49:26,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:49:26,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:49:26,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878203053] [2024-06-27 23:49:26,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878203053] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:49:26,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:49:26,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:49:26,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688848668] [2024-06-27 23:49:26,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:49:26,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:49:26,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:49:26,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:49:26,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:49:26,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:49:26,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 569 places, 531 transitions, 5018 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:49:26,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:49:26,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:49:26,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:49:26,890 INFO L124 PetriNetUnfolderBase]: 908/1658 cut-off events. [2024-06-27 23:49:26,890 INFO L125 PetriNetUnfolderBase]: For 905630/905630 co-relation queries the response was YES. [2024-06-27 23:49:26,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16338 conditions, 1658 events. 908/1658 cut-off events. For 905630/905630 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 9877 event pairs, 54 based on Foata normal form. 1/1658 useless extension candidates. Maximal degree in co-relation 16062. Up to 1280 conditions per place. [2024-06-27 23:49:26,921 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 409 selfloop transitions, 131 changer transitions 0/543 dead transitions. [2024-06-27 23:49:26,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 580 places, 543 transitions, 6604 flow [2024-06-27 23:49:26,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:49:26,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:49:26,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 156 transitions. [2024-06-27 23:49:26,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-27 23:49:26,923 INFO L175 Difference]: Start difference. First operand has 569 places, 531 transitions, 5018 flow. Second operand 12 states and 156 transitions. [2024-06-27 23:49:26,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 580 places, 543 transitions, 6604 flow [2024-06-27 23:49:31,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 572 places, 543 transitions, 6257 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-27 23:49:31,597 INFO L231 Difference]: Finished difference. Result has 573 places, 531 transitions, 4938 flow [2024-06-27 23:49:31,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4671, PETRI_DIFFERENCE_MINUEND_PLACES=561, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4938, PETRI_PLACES=573, PETRI_TRANSITIONS=531} [2024-06-27 23:49:31,598 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 541 predicate places. [2024-06-27 23:49:31,598 INFO L495 AbstractCegarLoop]: Abstraction has has 573 places, 531 transitions, 4938 flow [2024-06-27 23:49:31,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:49:31,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:49:31,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:49:31,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2024-06-27 23:49:31,598 INFO L420 AbstractCegarLoop]: === Iteration 241 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:49:31,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:49:31,599 INFO L85 PathProgramCache]: Analyzing trace with hash -2042102277, now seen corresponding path program 20 times [2024-06-27 23:49:31,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:49:31,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299516826] [2024-06-27 23:49:31,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:49:31,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:49:31,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:49:32,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:49:32,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:49:32,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299516826] [2024-06-27 23:49:32,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299516826] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:49:32,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:49:32,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:49:32,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382506092] [2024-06-27 23:49:32,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:49:32,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:49:32,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:49:32,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:49:32,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:49:33,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:49:33,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 573 places, 531 transitions, 4938 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:49:33,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:49:33,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:49:33,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:49:33,651 INFO L124 PetriNetUnfolderBase]: 906/1655 cut-off events. [2024-06-27 23:49:33,652 INFO L125 PetriNetUnfolderBase]: For 884357/884357 co-relation queries the response was YES. [2024-06-27 23:49:33,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16016 conditions, 1655 events. 906/1655 cut-off events. For 884357/884357 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 9869 event pairs, 54 based on Foata normal form. 1/1655 useless extension candidates. Maximal degree in co-relation 15738. Up to 1278 conditions per place. [2024-06-27 23:49:33,681 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 427 selfloop transitions, 112 changer transitions 0/542 dead transitions. [2024-06-27 23:49:33,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 584 places, 542 transitions, 6042 flow [2024-06-27 23:49:33,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:49:33,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:49:33,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 159 transitions. [2024-06-27 23:49:33,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4015151515151515 [2024-06-27 23:49:33,683 INFO L175 Difference]: Start difference. First operand has 573 places, 531 transitions, 4938 flow. Second operand 12 states and 159 transitions. [2024-06-27 23:49:33,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 584 places, 542 transitions, 6042 flow [2024-06-27 23:49:37,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 572 places, 542 transitions, 5779 flow, removed 21 selfloop flow, removed 12 redundant places. [2024-06-27 23:49:37,575 INFO L231 Difference]: Finished difference. Result has 573 places, 531 transitions, 4904 flow [2024-06-27 23:49:37,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4675, PETRI_DIFFERENCE_MINUEND_PLACES=561, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4904, PETRI_PLACES=573, PETRI_TRANSITIONS=531} [2024-06-27 23:49:37,575 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 541 predicate places. [2024-06-27 23:49:37,575 INFO L495 AbstractCegarLoop]: Abstraction has has 573 places, 531 transitions, 4904 flow [2024-06-27 23:49:37,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:49:37,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:49:37,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:49:37,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2024-06-27 23:49:37,576 INFO L420 AbstractCegarLoop]: === Iteration 242 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:49:37,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:49:37,577 INFO L85 PathProgramCache]: Analyzing trace with hash -810281533, now seen corresponding path program 14 times [2024-06-27 23:49:37,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:49:37,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665455706] [2024-06-27 23:49:37,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:49:37,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:49:37,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:49:39,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:49:39,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:49:39,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665455706] [2024-06-27 23:49:39,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665455706] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:49:39,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:49:39,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:49:39,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017490603] [2024-06-27 23:49:39,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:49:39,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:49:39,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:49:39,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:49:39,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:49:39,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:49:39,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 573 places, 531 transitions, 4904 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:49:39,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:49:39,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:49:39,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:49:39,735 INFO L124 PetriNetUnfolderBase]: 904/1652 cut-off events. [2024-06-27 23:49:39,736 INFO L125 PetriNetUnfolderBase]: For 862226/862226 co-relation queries the response was YES. [2024-06-27 23:49:39,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15734 conditions, 1652 events. 904/1652 cut-off events. For 862226/862226 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 9823 event pairs, 46 based on Foata normal form. 1/1652 useless extension candidates. Maximal degree in co-relation 15455. Up to 1159 conditions per place. [2024-06-27 23:49:39,766 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 411 selfloop transitions, 130 changer transitions 0/544 dead transitions. [2024-06-27 23:49:39,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 582 places, 544 transitions, 6498 flow [2024-06-27 23:49:39,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:49:39,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:49:39,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 147 transitions. [2024-06-27 23:49:39,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44545454545454544 [2024-06-27 23:49:39,767 INFO L175 Difference]: Start difference. First operand has 573 places, 531 transitions, 4904 flow. Second operand 10 states and 147 transitions. [2024-06-27 23:49:39,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 582 places, 544 transitions, 6498 flow [2024-06-27 23:49:45,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 570 places, 544 transitions, 6168 flow, removed 14 selfloop flow, removed 12 redundant places. [2024-06-27 23:49:45,335 INFO L231 Difference]: Finished difference. Result has 571 places, 531 transitions, 4839 flow [2024-06-27 23:49:45,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4574, PETRI_DIFFERENCE_MINUEND_PLACES=561, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4839, PETRI_PLACES=571, PETRI_TRANSITIONS=531} [2024-06-27 23:49:45,335 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 539 predicate places. [2024-06-27 23:49:45,335 INFO L495 AbstractCegarLoop]: Abstraction has has 571 places, 531 transitions, 4839 flow [2024-06-27 23:49:45,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:49:45,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:49:45,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:49:45,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2024-06-27 23:49:45,336 INFO L420 AbstractCegarLoop]: === Iteration 243 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:49:45,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:49:45,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1812413419, now seen corresponding path program 15 times [2024-06-27 23:49:45,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:49:45,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422647938] [2024-06-27 23:49:45,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:49:45,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:49:45,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:49:46,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:49:46,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:49:46,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422647938] [2024-06-27 23:49:46,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422647938] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:49:46,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:49:46,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:49:46,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491190759] [2024-06-27 23:49:46,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:49:46,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:49:46,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:49:46,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:49:46,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:49:46,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:49:46,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 571 places, 531 transitions, 4839 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:49:46,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:49:46,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:49:46,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:49:47,329 INFO L124 PetriNetUnfolderBase]: 902/1649 cut-off events. [2024-06-27 23:49:47,330 INFO L125 PetriNetUnfolderBase]: For 839932/839932 co-relation queries the response was YES. [2024-06-27 23:49:47,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15475 conditions, 1649 events. 902/1649 cut-off events. For 839932/839932 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 9807 event pairs, 46 based on Foata normal form. 1/1649 useless extension candidates. Maximal degree in co-relation 15196. Up to 1157 conditions per place. [2024-06-27 23:49:47,359 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 386 selfloop transitions, 154 changer transitions 0/543 dead transitions. [2024-06-27 23:49:47,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 580 places, 543 transitions, 5947 flow [2024-06-27 23:49:47,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:49:47,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:49:47,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 143 transitions. [2024-06-27 23:49:47,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-27 23:49:47,360 INFO L175 Difference]: Start difference. First operand has 571 places, 531 transitions, 4839 flow. Second operand 10 states and 143 transitions. [2024-06-27 23:49:47,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 580 places, 543 transitions, 5947 flow [2024-06-27 23:49:52,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 570 places, 543 transitions, 5587 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-27 23:49:52,715 INFO L231 Difference]: Finished difference. Result has 571 places, 531 transitions, 4793 flow [2024-06-27 23:49:52,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4479, PETRI_DIFFERENCE_MINUEND_PLACES=561, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4793, PETRI_PLACES=571, PETRI_TRANSITIONS=531} [2024-06-27 23:49:52,716 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 539 predicate places. [2024-06-27 23:49:52,716 INFO L495 AbstractCegarLoop]: Abstraction has has 571 places, 531 transitions, 4793 flow [2024-06-27 23:49:52,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:49:52,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:49:52,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:49:52,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2024-06-27 23:49:52,716 INFO L420 AbstractCegarLoop]: === Iteration 244 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:49:52,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:49:52,717 INFO L85 PathProgramCache]: Analyzing trace with hash 763488441, now seen corresponding path program 6 times [2024-06-27 23:49:52,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:49:52,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818436425] [2024-06-27 23:49:52,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:49:52,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:49:52,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:49:54,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:49:54,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:49:54,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818436425] [2024-06-27 23:49:54,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818436425] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:49:54,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:49:54,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:49:54,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336942324] [2024-06-27 23:49:54,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:49:54,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:49:54,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:49:54,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:49:54,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:49:54,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:49:54,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 571 places, 531 transitions, 4793 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:49:54,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:49:54,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:49:54,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:49:55,147 INFO L124 PetriNetUnfolderBase]: 857/1608 cut-off events. [2024-06-27 23:49:55,147 INFO L125 PetriNetUnfolderBase]: For 878066/878066 co-relation queries the response was YES. [2024-06-27 23:49:55,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15328 conditions, 1608 events. 857/1608 cut-off events. For 878066/878066 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 9817 event pairs, 62 based on Foata normal form. 2/1609 useless extension candidates. Maximal degree in co-relation 15048. Up to 1169 conditions per place. [2024-06-27 23:49:55,176 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 385 selfloop transitions, 83 changer transitions 0/542 dead transitions. [2024-06-27 23:49:55,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 581 places, 542 transitions, 5803 flow [2024-06-27 23:49:55,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:49:55,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:49:55,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-27 23:49:55,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4022038567493113 [2024-06-27 23:49:55,177 INFO L175 Difference]: Start difference. First operand has 571 places, 531 transitions, 4793 flow. Second operand 11 states and 146 transitions. [2024-06-27 23:49:55,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 581 places, 542 transitions, 5803 flow [2024-06-27 23:50:00,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 571 places, 542 transitions, 5464 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 23:50:00,862 INFO L231 Difference]: Finished difference. Result has 572 places, 532 transitions, 4678 flow [2024-06-27 23:50:00,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4454, PETRI_DIFFERENCE_MINUEND_PLACES=561, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=448, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4678, PETRI_PLACES=572, PETRI_TRANSITIONS=532} [2024-06-27 23:50:00,863 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 540 predicate places. [2024-06-27 23:50:00,863 INFO L495 AbstractCegarLoop]: Abstraction has has 572 places, 532 transitions, 4678 flow [2024-06-27 23:50:00,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:00,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:50:00,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:50:00,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2024-06-27 23:50:00,864 INFO L420 AbstractCegarLoop]: === Iteration 245 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:50:00,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:50:00,864 INFO L85 PathProgramCache]: Analyzing trace with hash -437782873, now seen corresponding path program 16 times [2024-06-27 23:50:00,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:50:00,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391484630] [2024-06-27 23:50:00,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:50:00,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:50:00,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:50:02,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:50:02,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:50:02,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391484630] [2024-06-27 23:50:02,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391484630] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:50:02,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:50:02,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:50:02,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117994089] [2024-06-27 23:50:02,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:50:02,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:50:02,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:50:02,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:50:02,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:50:02,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:50:02,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 572 places, 532 transitions, 4678 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:02,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:50:02,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:50:02,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:50:03,046 INFO L124 PetriNetUnfolderBase]: 924/1684 cut-off events. [2024-06-27 23:50:03,047 INFO L125 PetriNetUnfolderBase]: For 947717/947717 co-relation queries the response was YES. [2024-06-27 23:50:03,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16440 conditions, 1684 events. 924/1684 cut-off events. For 947717/947717 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 10011 event pairs, 49 based on Foata normal form. 1/1684 useless extension candidates. Maximal degree in co-relation 16158. Up to 998 conditions per place. [2024-06-27 23:50:03,079 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 393 selfloop transitions, 160 changer transitions 0/556 dead transitions. [2024-06-27 23:50:03,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 581 places, 556 transitions, 7976 flow [2024-06-27 23:50:03,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:50:03,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:50:03,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-06-27 23:50:03,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4696969696969697 [2024-06-27 23:50:03,081 INFO L175 Difference]: Start difference. First operand has 572 places, 532 transitions, 4678 flow. Second operand 10 states and 155 transitions. [2024-06-27 23:50:03,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 581 places, 556 transitions, 7976 flow [2024-06-27 23:50:08,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 572 places, 556 transitions, 7762 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-27 23:50:08,772 INFO L231 Difference]: Finished difference. Result has 573 places, 542 transitions, 5003 flow [2024-06-27 23:50:08,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4464, PETRI_DIFFERENCE_MINUEND_PLACES=563, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=532, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5003, PETRI_PLACES=573, PETRI_TRANSITIONS=542} [2024-06-27 23:50:08,772 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 541 predicate places. [2024-06-27 23:50:08,772 INFO L495 AbstractCegarLoop]: Abstraction has has 573 places, 542 transitions, 5003 flow [2024-06-27 23:50:08,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:08,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:50:08,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:50:08,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244 [2024-06-27 23:50:08,773 INFO L420 AbstractCegarLoop]: === Iteration 246 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:50:08,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:50:08,774 INFO L85 PathProgramCache]: Analyzing trace with hash 763493401, now seen corresponding path program 21 times [2024-06-27 23:50:08,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:50:08,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707298509] [2024-06-27 23:50:08,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:50:08,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:50:08,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:50:10,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:50:10,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:50:10,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707298509] [2024-06-27 23:50:10,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707298509] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:50:10,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:50:10,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:50:10,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501856176] [2024-06-27 23:50:10,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:50:10,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:50:10,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:50:10,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:50:10,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:50:10,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:50:10,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 573 places, 542 transitions, 5003 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:10,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:50:10,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:50:10,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:50:11,788 INFO L124 PetriNetUnfolderBase]: 932/1699 cut-off events. [2024-06-27 23:50:11,789 INFO L125 PetriNetUnfolderBase]: For 982201/982201 co-relation queries the response was YES. [2024-06-27 23:50:11,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16979 conditions, 1699 events. 932/1699 cut-off events. For 982201/982201 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 10148 event pairs, 64 based on Foata normal form. 1/1699 useless extension candidates. Maximal degree in co-relation 16697. Up to 869 conditions per place. [2024-06-27 23:50:11,813 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 341 selfloop transitions, 216 changer transitions 0/560 dead transitions. [2024-06-27 23:50:11,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 584 places, 560 transitions, 7309 flow [2024-06-27 23:50:11,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:50:11,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:50:11,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 158 transitions. [2024-06-27 23:50:11,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.398989898989899 [2024-06-27 23:50:11,815 INFO L175 Difference]: Start difference. First operand has 573 places, 542 transitions, 5003 flow. Second operand 12 states and 158 transitions. [2024-06-27 23:50:11,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 584 places, 560 transitions, 7309 flow [2024-06-27 23:50:16,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 580 places, 560 transitions, 7011 flow, removed 38 selfloop flow, removed 4 redundant places. [2024-06-27 23:50:16,748 INFO L231 Difference]: Finished difference. Result has 581 places, 548 transitions, 5332 flow [2024-06-27 23:50:16,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4705, PETRI_DIFFERENCE_MINUEND_PLACES=569, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=212, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5332, PETRI_PLACES=581, PETRI_TRANSITIONS=548} [2024-06-27 23:50:16,749 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 549 predicate places. [2024-06-27 23:50:16,749 INFO L495 AbstractCegarLoop]: Abstraction has has 581 places, 548 transitions, 5332 flow [2024-06-27 23:50:16,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:16,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:50:16,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:50:16,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable245 [2024-06-27 23:50:16,749 INFO L420 AbstractCegarLoop]: === Iteration 247 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:50:16,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:50:16,750 INFO L85 PathProgramCache]: Analyzing trace with hash 991804929, now seen corresponding path program 17 times [2024-06-27 23:50:16,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:50:16,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066741970] [2024-06-27 23:50:16,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:50:16,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:50:16,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:50:18,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:50:18,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:50:18,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066741970] [2024-06-27 23:50:18,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066741970] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:50:18,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:50:18,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:50:18,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513296444] [2024-06-27 23:50:18,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:50:18,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:50:18,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:50:18,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:50:18,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:50:18,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:50:18,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 581 places, 548 transitions, 5332 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:18,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:50:18,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:50:18,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:50:19,055 INFO L124 PetriNetUnfolderBase]: 945/1718 cut-off events. [2024-06-27 23:50:19,055 INFO L125 PetriNetUnfolderBase]: For 1051183/1051183 co-relation queries the response was YES. [2024-06-27 23:50:19,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17814 conditions, 1718 events. 945/1718 cut-off events. For 1051183/1051183 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 10257 event pairs, 55 based on Foata normal form. 1/1718 useless extension candidates. Maximal degree in co-relation 17530. Up to 1027 conditions per place. [2024-06-27 23:50:19,087 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 403 selfloop transitions, 163 changer transitions 0/569 dead transitions. [2024-06-27 23:50:19,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 590 places, 569 transitions, 9070 flow [2024-06-27 23:50:19,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:50:19,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:50:19,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2024-06-27 23:50:19,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47878787878787876 [2024-06-27 23:50:19,089 INFO L175 Difference]: Start difference. First operand has 581 places, 548 transitions, 5332 flow. Second operand 10 states and 158 transitions. [2024-06-27 23:50:19,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 590 places, 569 transitions, 9070 flow [2024-06-27 23:50:24,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 583 places, 569 transitions, 8876 flow, removed 44 selfloop flow, removed 7 redundant places. [2024-06-27 23:50:24,478 INFO L231 Difference]: Finished difference. Result has 584 places, 554 transitions, 5583 flow [2024-06-27 23:50:24,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5138, PETRI_DIFFERENCE_MINUEND_PLACES=574, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=548, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5583, PETRI_PLACES=584, PETRI_TRANSITIONS=554} [2024-06-27 23:50:24,478 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 552 predicate places. [2024-06-27 23:50:24,478 INFO L495 AbstractCegarLoop]: Abstraction has has 584 places, 554 transitions, 5583 flow [2024-06-27 23:50:24,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:24,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:50:24,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:50:24,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable246 [2024-06-27 23:50:24,479 INFO L420 AbstractCegarLoop]: === Iteration 248 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:50:24,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:50:24,479 INFO L85 PathProgramCache]: Analyzing trace with hash 763666381, now seen corresponding path program 22 times [2024-06-27 23:50:24,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:50:24,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320838321] [2024-06-27 23:50:24,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:50:24,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:50:24,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:50:26,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:50:26,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:50:26,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320838321] [2024-06-27 23:50:26,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320838321] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:50:26,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:50:26,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:50:26,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284810231] [2024-06-27 23:50:26,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:50:26,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:50:26,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:50:26,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:50:26,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:50:26,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:50:26,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 584 places, 554 transitions, 5583 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:26,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:50:26,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:50:26,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:50:27,492 INFO L124 PetriNetUnfolderBase]: 953/1735 cut-off events. [2024-06-27 23:50:27,492 INFO L125 PetriNetUnfolderBase]: For 1089539/1089539 co-relation queries the response was YES. [2024-06-27 23:50:27,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18396 conditions, 1735 events. 953/1735 cut-off events. For 1089539/1089539 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 10364 event pairs, 64 based on Foata normal form. 1/1735 useless extension candidates. Maximal degree in co-relation 18111. Up to 900 conditions per place. [2024-06-27 23:50:27,526 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 360 selfloop transitions, 208 changer transitions 0/571 dead transitions. [2024-06-27 23:50:27,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 595 places, 571 transitions, 8325 flow [2024-06-27 23:50:27,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:50:27,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:50:27,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 161 transitions. [2024-06-27 23:50:27,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4065656565656566 [2024-06-27 23:50:27,527 INFO L175 Difference]: Start difference. First operand has 584 places, 554 transitions, 5583 flow. Second operand 12 states and 161 transitions. [2024-06-27 23:50:27,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 595 places, 571 transitions, 8325 flow [2024-06-27 23:50:33,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 590 places, 571 transitions, 7995 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-27 23:50:33,590 INFO L231 Difference]: Finished difference. Result has 591 places, 558 transitions, 5770 flow [2024-06-27 23:50:33,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5253, PETRI_DIFFERENCE_MINUEND_PLACES=579, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=554, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=204, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5770, PETRI_PLACES=591, PETRI_TRANSITIONS=558} [2024-06-27 23:50:33,590 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 559 predicate places. [2024-06-27 23:50:33,591 INFO L495 AbstractCegarLoop]: Abstraction has has 591 places, 558 transitions, 5770 flow [2024-06-27 23:50:33,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:33,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:50:33,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:50:33,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247 [2024-06-27 23:50:33,591 INFO L420 AbstractCegarLoop]: === Iteration 249 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:50:33,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:50:33,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1580263963, now seen corresponding path program 7 times [2024-06-27 23:50:33,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:50:33,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697388985] [2024-06-27 23:50:33,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:50:33,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:50:33,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:50:35,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:50:35,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:50:35,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697388985] [2024-06-27 23:50:35,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697388985] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:50:35,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:50:35,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:50:35,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114031831] [2024-06-27 23:50:35,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:50:35,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:50:35,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:50:35,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:50:35,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:50:35,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-06-27 23:50:35,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 591 places, 558 transitions, 5770 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:35,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:50:35,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-06-27 23:50:35,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:50:36,384 INFO L124 PetriNetUnfolderBase]: 961/1748 cut-off events. [2024-06-27 23:50:36,384 INFO L125 PetriNetUnfolderBase]: For 1131965/1131965 co-relation queries the response was YES. [2024-06-27 23:50:36,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18896 conditions, 1748 events. 961/1748 cut-off events. For 1131965/1131965 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 10454 event pairs, 135 based on Foata normal form. 1/1748 useless extension candidates. Maximal degree in co-relation 18609. Up to 1610 conditions per place. [2024-06-27 23:50:36,418 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 547 selfloop transitions, 23 changer transitions 0/573 dead transitions. [2024-06-27 23:50:36,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 602 places, 573 transitions, 7542 flow [2024-06-27 23:50:36,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:50:36,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:50:36,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-27 23:50:36,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34595959595959597 [2024-06-27 23:50:36,419 INFO L175 Difference]: Start difference. First operand has 591 places, 558 transitions, 5770 flow. Second operand 12 states and 137 transitions. [2024-06-27 23:50:36,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 602 places, 573 transitions, 7542 flow [2024-06-27 23:50:43,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 594 places, 573 transitions, 7122 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-27 23:50:43,726 INFO L231 Difference]: Finished difference. Result has 595 places, 562 transitions, 5517 flow [2024-06-27 23:50:43,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5350, PETRI_DIFFERENCE_MINUEND_PLACES=583, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=537, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5517, PETRI_PLACES=595, PETRI_TRANSITIONS=562} [2024-06-27 23:50:43,726 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 563 predicate places. [2024-06-27 23:50:43,726 INFO L495 AbstractCegarLoop]: Abstraction has has 595 places, 562 transitions, 5517 flow [2024-06-27 23:50:43,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:43,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:50:43,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:50:43,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248 [2024-06-27 23:50:43,727 INFO L420 AbstractCegarLoop]: === Iteration 250 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:50:43,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:50:43,727 INFO L85 PathProgramCache]: Analyzing trace with hash 999848499, now seen corresponding path program 18 times [2024-06-27 23:50:43,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:50:43,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772664206] [2024-06-27 23:50:43,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:50:43,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:50:43,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:50:45,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:50:45,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:50:45,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772664206] [2024-06-27 23:50:45,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772664206] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:50:45,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:50:45,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:50:45,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885760157] [2024-06-27 23:50:45,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:50:45,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:50:45,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:50:45,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:50:45,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:50:45,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:50:45,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 595 places, 562 transitions, 5517 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:45,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:50:45,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:50:45,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:50:45,969 INFO L124 PetriNetUnfolderBase]: 959/1745 cut-off events. [2024-06-27 23:50:45,969 INFO L125 PetriNetUnfolderBase]: For 1107725/1107725 co-relation queries the response was YES. [2024-06-27 23:50:45,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18303 conditions, 1745 events. 959/1745 cut-off events. For 1107725/1107725 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 10463 event pairs, 55 based on Foata normal form. 1/1745 useless extension candidates. Maximal degree in co-relation 18015. Up to 1051 conditions per place. [2024-06-27 23:50:46,004 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 405 selfloop transitions, 167 changer transitions 0/575 dead transitions. [2024-06-27 23:50:46,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 604 places, 575 transitions, 8183 flow [2024-06-27 23:50:46,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:50:46,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:50:46,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-06-27 23:50:46,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4636363636363636 [2024-06-27 23:50:46,006 INFO L175 Difference]: Start difference. First operand has 595 places, 562 transitions, 5517 flow. Second operand 10 states and 153 transitions. [2024-06-27 23:50:46,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 604 places, 575 transitions, 8183 flow [2024-06-27 23:50:52,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 596 places, 575 transitions, 8071 flow, removed 44 selfloop flow, removed 8 redundant places. [2024-06-27 23:50:52,266 INFO L231 Difference]: Finished difference. Result has 597 places, 562 transitions, 5744 flow [2024-06-27 23:50:52,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=5405, PETRI_DIFFERENCE_MINUEND_PLACES=587, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=562, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5744, PETRI_PLACES=597, PETRI_TRANSITIONS=562} [2024-06-27 23:50:52,266 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 565 predicate places. [2024-06-27 23:50:52,266 INFO L495 AbstractCegarLoop]: Abstraction has has 597 places, 562 transitions, 5744 flow [2024-06-27 23:50:52,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:52,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:50:52,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:50:52,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable249 [2024-06-27 23:50:52,267 INFO L420 AbstractCegarLoop]: === Iteration 251 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:50:52,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:50:52,268 INFO L85 PathProgramCache]: Analyzing trace with hash -437782563, now seen corresponding path program 8 times [2024-06-27 23:50:52,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:50:52,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903442127] [2024-06-27 23:50:52,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:50:52,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:50:52,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:50:53,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:50:53,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:50:53,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903442127] [2024-06-27 23:50:53,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903442127] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:50:53,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:50:53,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:50:53,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390183687] [2024-06-27 23:50:53,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:50:53,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:50:54,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:50:54,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:50:54,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:50:54,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-27 23:50:54,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 597 places, 562 transitions, 5744 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:50:54,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:50:54,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-27 23:50:54,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:50:54,795 INFO L124 PetriNetUnfolderBase]: 962/1747 cut-off events. [2024-06-27 23:50:54,796 INFO L125 PetriNetUnfolderBase]: For 1116987/1116987 co-relation queries the response was YES. [2024-06-27 23:50:54,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18647 conditions, 1747 events. 962/1747 cut-off events. For 1116987/1116987 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 10462 event pairs, 58 based on Foata normal form. 1/1747 useless extension candidates. Maximal degree in co-relation 18358. Up to 1397 conditions per place. [2024-06-27 23:50:54,829 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 478 selfloop transitions, 93 changer transitions 0/574 dead transitions. [2024-06-27 23:50:54,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 607 places, 574 transitions, 6968 flow [2024-06-27 23:50:54,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:50:54,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:50:54,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 152 transitions. [2024-06-27 23:50:54,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.418732782369146 [2024-06-27 23:50:54,831 INFO L175 Difference]: Start difference. First operand has 597 places, 562 transitions, 5744 flow. Second operand 11 states and 152 transitions. [2024-06-27 23:50:54,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 607 places, 574 transitions, 6968 flow Killed by 15